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Id 136
Identification Type Plant
Name Plant Macrofossil
Distinguishing Features
Description
Tags
External Resources
Imposters Bryozoa
statoblasts resemble plant structures
Insect
insect eggs may resemble seeds/plant reproductive organs
Sponge
tissue resembles plant structures
Daphnia
ephippia (eggs) resemble seeds
Images
Unique Identification: Plant Macrofossil
Taxon: Abies balsamea
Site name: St.Louis County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Abaxial (bottom) surface pictured on top, adaxial (top) surface below. Base of needle on righthand side of photograph. Note blunt tip w/small notch. Flat in cross section, twisted at base. May be 12-25 mm long.
Image Tags: leaf needle terrestrial dateable linear blunt emarginate
Unique Identification: Plant Macrofossil
Taxon: Acer negundo
Site name: USA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fruit 3-5 cm long; wing may be straight or incurved; seed ~1.2 cm long
Image Tags: fruit terrestrial dateable winged
Unique Identification: Plant Macrofossil
Taxon: Acer rubrum
Site name: Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fruit 2-4 cm; wing slightly divergent to 50-60 degrees
Image Tags: fruit seed terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Acer saccharinum
Site name: USA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fruit 3-5 cm long; seeds 5-10 mm in diameter
Image Tags: fruit seed terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Acer saccharum
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: opposite bud scars, glabrous (shiny); lenticels (white marks)
Image Tags: twig terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Acer saccharum
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: pointy, brown colored
Image Tags: bud-scale terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Agastache foeniculum
Site name: Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong rounded-triangular, 1-1.5 mm long; surface ridged, with bristles clustered at top and along margins
Image Tags: seed terrestrial dateable oblong obovate ridged bristled
Unique Identification: Plant Macrofossil
Taxon: Alisma subcordatum
Site name: Johnson County, IA
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: elliptic, 1.5-3 mm long; differentiated from Sagittaria by marginal groove and lack of beak
Image Tags: emergent date-with-caution seed grooved striate
Unique Identification: Plant Macrofossil
Taxon: Alnus incana
Site name: gravel bar in Yukon River at Whitehorse, Yukon, Canada
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: very weakly 5 lobed
Image Tags: catkin-bract terrestrial lobed
Unique Identification: Plant Macrofossil
Taxon: Alnus incana
Site name: gravel bar in Yukon River at Whitehorse, Yukon, Canada
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: winged on margins, narrower than body; elliptic to obovate, irregular shaped; 2-4 mm long; wings may be damaged/missing in macrofossil samples.
Image Tags: seed terrestrial style-base-persistent
Unique Identification: Plant Macrofossil
Taxon: Alnus serrulata
Site name: Huntsville County, AL
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovoid, flattened; narrowly winged on margins, 2-3 mm long
Image Tags: seed terrestrial dateable style-base-persistent
Unique Identification: Plant Macrofossil
Taxon: Alnus serrulata
Site name: Huntsville County, AL
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: weakly 5 lobed, with center lobe being most prominent; may be dotted with resin
Image Tags: catkin-bract terrestrial dateable lobed resinous
Unique Identification: Plant Macrofossil
Taxon: Alnus viridis
Site name: edge of Iron Lake, Bayfield County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: unlobed
Image Tags: catkin-bract dateable terrestrial
Unique Identification: Plant Macrofossil
Taxon: Alnus viridis
Site name: edge of Iron Lake, Bayfield County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, thinly winged, 2-3 mm long; styles persistent; wings may be damaged/missing in subfossil samples.
Image Tags: seed dateable terrestrial elliptic winged stigmas-persistent
Unique Identification: Plant Macrofossil
Taxon: Andromeda glaucophlla
Site name: Van Meer Bog, Alger County, MI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, 5 sectioned capsule, ~5 mm wide; indented top; style persistent at top of capsule
Image Tags: terrestrial dateable round ribbed globose indented style-persistent
Unique Identification: Plant Macrofossil
Taxon: Andromeda glaucophlla
Site name: Van Meer Bog, Alger County, MI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: linear to narrowly oval, 2-5 cm long, 3-10 mm wide; sharp pointed with a small spine; leathery; margins may be rolled under abaxial (bottom) side of leaf (revolute)
Image Tags: leaf terrestrial dateable linear pointed revolute
Unique Identification: Plant Macrofossil
Taxon: Andromeda glaucophlla
Site name: Van Meer Bog, Alger County, MI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate-kidney shaped, 0.7-1.2 mm long
Image Tags: seed terrestrial dateable obovate reniform
Unique Identification: Plant Macrofossil
Taxon: Anemone canadensis
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flat, obovate, 3-5 mm; long beak 2-4 mm long; winged; wooly hairs
Image Tags: seed terrestrial dateable beaked hairy winged pubescent rostrate style-persistent obovate
Unique Identification: Plant Macrofossil
Taxon: Aster macrophyllus
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-cylindric, 2-3 mm long with tapering base; pappus (white hairs) may or may not be present in fossils; lengthwise ridges
Image Tags: terrestrial seed dateable pappus linear hairy bristled oblong ridged
Unique Identification: Plant Macrofossil
Taxon: Atriplex patula
Site name: Melenaur farm near Denhoff, Sheridan County, ND
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: lens shaped in cross section, circular in outline; 1-3 mm wide; dull, dark brown to black; outline of ring-shaped embryo clearly visible
Image Tags: seed terrestrial dateable round
Unique Identification: Plant Macrofossil
Taxon: Betula alleghaniensis
Site name: Hardin County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: sharply 3-lobed, ciliate (hairs) along margins, 6-13 mm long
Image Tags: catkin-bract terrestrial dateable lobed pubescent hairy
Unique Identification: Plant Macrofossil
Taxon: Betula alleghaniensis
Site name: Hardin County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: winged, 3 mm long, 3-5 mm wide, ellipsoid-obovate in shape, somewhat flattened; wings may be damaged/missing in subfossil samples
Image Tags: seed terrestrial dateable obovate winged stigmas-persistent hairy pubescent
Unique Identification: Plant Macrofossil
Taxon: Betula papyrifera
Site name: Rice Portage Lake, Carlton County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subfossil specimen; note remnant of wings, persistent stigmas, characteristic size and shape (elliptic, 1.5-3 mm)
Image Tags: terrestrial bistigmatic dateable seed winged elliptic pubescent subfossilized stigmas-persistent
Unique Identification: Plant Macrofossil
Taxon: Betula papyrifera
Site name: SE side of Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 3 lobed, lobes divergent, forming cross-like or fleur-de-lis shape. 6-12 mm.
Image Tags: catkin-bract terrestrial dateable lobed hairy pubescent
Unique Identification: Plant Macrofossil
Taxon: Betula papyrifera
Site name: SE side of Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: winged, 1.5-3 mm long, nutlet 0.5-1 mm wide, wings slightly wider than nutlet; wings may be damaged/missing in subfossil samples
Image Tags: seed terrestrial dateable winged obovate hairy pubescent stigmas-persistent
Unique Identification: Plant Macrofossil
Taxon: Betula pumila
Site name: Devlin's Park, Boulder, CO
Light type: Plane-Polarized Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 3 lobed, rounded, sometimes dotted with resin.
Image Tags: catkin-bract terrestrial dateable lobed resinous
Unique Identification: Plant Macrofossil
Taxon: Betula pumila
Site name: Devlin's Park, Boulder, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: very narrowly winged, rounded, 2-3 mm long, 2-4 mm wide; 2 stubby style bases persistent; woody, flat face
Image Tags: seed terrestrial dateable winged round style-base-persistent
Unique Identification: Plant Macrofossil
Taxon: Betula pumila
Site name: Devlin's Park, Boulder, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial (top) surface; rounded to obovate, 2-4 cm long, 1-3 cm wide, coarsely toothed margins, teeth may be blunt or sharp; petioles 3-6 mm long.
Image Tags: leaf terrestrial dateable reticulate toothed
Unique Identification: Plant Macrofossil
Taxon: Betula pumila
Site name: Devlin's Park, Boulder, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: abaxial (bottom) surface; rounded to obovate, 2-4 cm long, 1-3 cm wide, coarsely toothed margins, teeth may be blunt or sharp; petioles (leaf stalk) 3-6 mm long.
Image Tags: leaf terrestrial dateable reticulate toothed
Unique Identification: Plant Macrofossil
Taxon: Boehmeria cylindrica
Site name: Jackson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate-compressed, 0.5-0.7 mm long; pointed style base (tip); body surrounded by wing-like ring of spongy tissue, except at base; short whitish hair along edges
Image Tags: seed terrestrial dateable winged obovate compressed
Unique Identification: Plant Macrofossil
Taxon: Brasenia schreberi
Site name: Pontederia Pond west of Muscatine, Muscatine County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong capsule, 3-5 mm long; may contain 1 or 2 seeds; capsules containing only 1 seed are tapered as seen in top left specimen
Image Tags: seed floating-leaved date-with-caution oblong capsule
Unique Identification: Plant Macrofossil
Taxon: Brasenia schreberi
Site name: Pontederia Pond west of Muscatine, Muscatine County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: globose-elliptic, 2-2.5 mm; seed wall radially striated, woody
Image Tags: seed floating-leaved date-with-caution woody globose elliptic
Unique Identification: Plant Macrofossil
Taxon: Bryopsida
Site name: Rice Portage Lake, Carlton County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fragile, dark stem; foliar scars alternate, formed from basal remains leaves; leaves acuminate (tapering to a point) translucent
Image Tags: aquatic-moss submerged do-not-date acuminate tapered subfossilized
Unique Identification: Plant Macrofossil
Taxon: Calamagrostis canadensis
Site name: Williams Prairie, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 2-4 mm long; smooth; shortly awned; finely hairy
Image Tags: awned emergent date-with-caution hairy pubescent
Unique Identification: Plant Macrofossil
Taxon: Calamagrostis canadensis
Site name: Williams Prairie, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: linear oblong, 1.5-2 mm long; dry, glabrous; pappus may or may not be present
Image Tags: pappus seed emergent date-with-caution glabrous smooth linear oblong hairy
Unique Identification: Plant Macrofossil
Taxon: Callitriche hermaphroditica
Site name: Nye County, NV
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic-reniform, 1-2 mm long; divided into 4 segments
Image Tags: submerged reniform elliptic seed do-not-date textured bumpy colliculate
Unique Identification: Plant Macrofossil
Taxon: Callitriche palustris
Site name: Winneshiek County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flattened-round, 1-1.5 mm long; pitted, narrowly winged near tips
Image Tags: submerged seed do-not-date round wedge-shaped pitted foveate
Unique Identification: Plant Macrofossil
Taxon: Caltha palustris
Site name: Williams Prairie, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, ~2 mm long; cellular reticulate; light, corky texture
Image Tags: seed elliptic emergent terrestrial date-with-caution reticulate
Unique Identification: Plant Macrofossil
Taxon: Campanula americana
Site name: City Park, Iowa City, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed, oval to elliptic, 0.5-1 mm long; glossy; conspicuous seed coat lighter in color than body
Image Tags: terrestrial dateable seed elliptic glabrous smooth base-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Capsella bursa-pastoris
Site name: Minnesota Weed Seeds, Series I, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed-elliptic, 0.5-1 mm long; attachment point slightly darker; ridged longitudinally due to bent embryo
Image Tags: terrestrial seed dateable hilum-conspicuous base-conspicuous ridged elliptic
Unique Identification: Plant Macrofossil
Taxon: Carex backii
Site name: Dubuque County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded trigonous, 2-2.5 mm long; weak reticulate texture; style base (top of seed) rounded with indent
Image Tags: terrestrial dateable seed foveate obovate reticulate pitted
Unique Identification: Plant Macrofossil
Taxon: Carex backii
Site name: Dubuque County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded trigonous, obovate, inconspicuously veined, 4-5.4 mm; beak 2 mm long, inconspicuously serrate
Image Tags: terrestrial dateable perigynia obovate beaked rostrate veined serrate
Unique Identification: Plant Macrofossil
Taxon: Carex comosa
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: trigonous, each side slightly concave, 1.5-2 mm long; style persistent
Image Tags: emergent date-with-caution seed trigonous style-persistent
Unique Identification: Plant Macrofossil
Taxon: Carex comosa
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lanceolate, 5-8 mm long; strongly nerved; tapering to beak, which is ~2-3 mm long; beake with reflexed teeth ~1-2 mm long
Image Tags: emergent date-with-caution perigynia ribbed lanceolate beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Carex deweyana
Site name: Dubuque County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 4-5 mm long, 3-4 time as long as wide, faintly veined or veinless on both sides; tapered beak with finely serrate margins
Image Tags: terrestrial dateable perigynia beaked rostrate serrate
Unique Identification: Plant Macrofossil
Taxon: Carex deweyana
Site name: Dubuque County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: biconvex, broad, 2-2.5 mm long
Image Tags: terrestrial dateable seed biconvex style-base-persistent obovate
Unique Identification: Plant Macrofossil
Taxon: Carex jamesii
Site name: Van Buren County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded trigonous, 1.8-2.3 mm long; weak reticulate texture; conspicuos style base (top of seed) rounded with indent
Image Tags: terrestrial dateable seed trigonous reticulate style-base-persistent
Unique Identification: Plant Macrofossil
Taxon: Carex jamesii
Site name: Van Buren County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subglobose, 3-4.5 mm long, 1.5-2 times as long as wide; short, slender beak
Image Tags: terrestrial dateable beaked rostrate perigynia round globose
Unique Identification: Plant Macrofossil
Taxon: Carex lacustris
Site name: Bog margin, St. Louis County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate, flattened to nearly round in cross section, 5-7 mm long; > 10 visible nerves; tapering to beak ~1 mm long
Image Tags: emergent date-with-caution perigynia ribbed veined ovate beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Carex squarrosa
Site name: Jefferson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obconic, inflated, body 3.5-6 mm, beak 2-3.5 mm; 2 strong ribs at summit, otherwise very sparsely and obscurely veined; beak teeth 0.2 mm long
Image Tags: emergent date-with-caution beaked rostrate perigynia ribbed
Unique Identification: Plant Macrofossil
Taxon: Carex squarrosa
Site name: Jefferson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ellipsoid trigonous with sinous, persistent style; 2.2-3 mm long, 2.5 times as long as wide
Image Tags: emergent date-with-caution seed pitted style-persistent elliptic trigonous
Unique Identification: Plant Macrofossil
Taxon: Carex tribuloides
Site name: Blackhawk County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: biconvex (lens shaped), 1.5 mm long, 0.5-0.75 mm wide
Image Tags: emergent date-with-caution seed biconvex style-persistent
Unique Identification: Plant Macrofossil
Taxon: Carex tribuloides
Site name: Blackhawk County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lanceolate, thin and scalelike with wings, 3-5.5 mm long, 1-1.5 mm wide; inner face distinctly veined; wings narrowed below the midpoint
Image Tags: emergent date-with-caution perigynia winged veined lanceolate
Unique Identification: Plant Macrofossil
Taxon: Carex viridula
Site name: Squaw Lake, Itasca County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: trigonous, 1.1-1.4 mm long, style base persistent
Image Tags: emergent date-with-caution obovate seed trigonous style-base-persistent reticulate
Unique Identification: Plant Macrofossil
Taxon: Carex viridula
Site name: Squaw Lake, Itasca County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, mostly straight, though sometimes beak is reflexed; 2.2-3.3 mm long; irregularly veined, with 2 prominent marginal veins and 2-6 less defined veins
Image Tags: emergent date-with-caution perigynia beaked rostrate veined obovate
Unique Identification: Plant Macrofossil
Taxon: Carpinus caroliniana
Site name: Baker land, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: bud-scale terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Carpinus caroliniana
Site name: Stonington, New London County, CT
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 2-3 cm halbard shaped with basal lobes; coarsely toothed, especially so along one side of center lobe
Image Tags: leaf terrestrial dateable toothed lobed
Unique Identification: Plant Macrofossil
Taxon: Carpinus caroliniana
Site name: Stonington, New London County, CT
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 2-3 cm halbard shaped with basal lobes; coarsely toothed, especially so along one side of center lobe
Image Tags: leaf terrestrial dateable toothed lobed
Unique Identification: Plant Macrofossil
Taxon: Carpinus caroliniana
Site name: Stonington, New London County, CT
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate-lenticular, ~ 2.7 x 2.4 x 1.2 mm; 3 or 4 longitudinal ridges/ribs on both faces in addition to ribs along margins (as opposed to smooth surface of Ostrya); brownish, papery lining inside of wall
Image Tags: seed terrestrial dateable ovate ribbed
Unique Identification: Plant Macrofossil
Taxon: Carpinus caroliniana
Site name: Baker land, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: twig bud terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Cerastium arvense
Site name: Clayton County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: angular-ovate to kidney shaped, 0.75-1 mm long; covered in many small tubercles (warty bumps) beginning at hilum (base) and broadening outward; rusty reddish brown, white hilum
Image Tags: seed warty tuberculate pitted foveate terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Cerastium nutans
Site name: Des Moines County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: angular-ovate, flat; ~0.5 mm long; surface with distinct tubercles (wart like projections); must compare to other tubercles within genus for species identification
Image Tags: seed terrestrial dateable tuberculate warty
Unique Identification: Plant Macrofossil
Taxon: Ceratophyllum demersum
Site name: Outlet to Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic in outline, lenticular in cross section, body ~5 mm long; 2-3 marginal spines; body more elongate than C. echinatum woody wall
Image Tags: seed spiny woody submerged do-not-date elliptic
Unique Identification: Plant Macrofossil
Taxon: Ceratophyllum demersum
Site name: Upper Hottes Lake, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: leaves in whorls of 6-12; each leaf 8-40 mm long, usually forked in 2-8 segements with spiny teeth along margins; stiff, brittle
Image Tags: leaf submerged do-not-date whorled spiny
Unique Identification: Plant Macrofossil
Taxon: Ceratophyllum echinatum
Site name: Baker County, GA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic in outline, lenticular in cross section, body ~5 mm long; abundant marginal spines; woody wall
Image Tags: seed spiny woody submerged do-not-date elliptic colliculate bumpy
Unique Identification: Plant Macrofossil
Taxon: Chamaedaphne calyculata
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: abaxial (bottom) side shown; oval, 1-5 cm long and 3-15 mm wide; tips may be rounded or pointed; leathery; short petioles; margins may be entire or with rounded teeth
Image Tags: leaf terrestrial dateable reticulate serrate elliptic
Unique Identification: Plant Macrofossil
Taxon: Chamaedaphne calyculata
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial (top) side shown; oval, 1-5 cm long and 3-15 mm wide; tips may be rounded or pointed; leathery; short petioles; margins may be entire or with rounded teeth
Image Tags: leaf terrestrial dateable elliptic reticulate serrate
Unique Identification: Plant Macrofossil
Taxon: Chamaedaphne calyculata
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: wedge shaped, < 1 mm; striate surface
Image Tags: seed terrestrial dateable striate grooved semicircular wedge-shaped
Unique Identification: Plant Macrofossil
Taxon: Chamaedaphne calyculata
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, 5 sectioned capsule, up to 6 mm wide; indented top; style persistent from top of capsule
Image Tags: terrestrial dateable round indented style-persistent ribbed
Unique Identification: Plant Macrofossil
Taxon: Chamaedaphne calyculata
Site name: Van Meer Bog, Alger County, MI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, 5 sectioned capsule, up to 6 mm wide; indented top; style persistent from top of capsule
Image Tags: terrestrial dateable indented style-persistent
Unique Identification: Plant Macrofossil
Taxon: Chara sp.
Site name: Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Terete, black, 0.3-0.5 mm long. Spiral markings (striae). Two basal impressions present.
Image Tags: submerged do-not-date elliptic black spiraled striate
Unique Identification: Plant Macrofossil
Taxon: Chenopodium album
Site name: Rochester Cemetary, Cedar County, IA
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: circular-lenticular, 1-2 mm wide; more spherical relative to other Chenopodium spp.; rounded margins; note notch in margin - this is the attachement scar and also represents the gap between each end of the embryo (which runs circular around the edge of the seed) - gap is relatively shallow in C. album; embryo extending to form blunt hook
Image Tags: seed shiny smooth glabrous terrestrial dateable notched
Unique Identification: Plant Macrofossil
Taxon: Chenopodium glaucum
Site name: sand spit, Little Millers Bay, Lake West Okoboji, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: circular-lenticular, 1-2 mm wide; shiny, textured, plump disk; rounded margins; note notch in margin - this is the attachement scar and also represents the gap between each end of the embryo (which runs circular around the edge of the seed) - gap is relatively narrow in C. glaucum
Image Tags: seed terrestrial shiny dateable round notched
Unique Identification: Plant Macrofossil
Taxon: Chenopodium pratericola
Site name: sandy hillside near Grover's Lake, NE
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: circular-lenticular, 1-2 mm wide; shiny, textured, plump disk; rounded margins; note notch in margin - this is the attachement scar and also represents the gap between each end of the embryo (which runs circular around the edge of the seed) - gap is very slight in C. pratericola
Image Tags: seed terrestrial shiny glabrous dateable notched round
Unique Identification: Plant Macrofossil
Taxon: Cicuta maculata
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, flat on one side, 2-4 mm long; conspicuously ribbed
Image Tags: seed emergent ribbed date-with-caution obovate planoconvex
Unique Identification: Plant Macrofossil
Taxon: Claytonia virginica
Site name: Coralville, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval-lenticular, 1-2 mm; black, very shiny; note marginal cleft plugged with white material
Image Tags: seed terrestrial dateable shiny glabrous smooth hilum-conspicuous elliptic
Unique Identification: Plant Macrofossil
Taxon: Cryptotaenia canadensis
Site name: Rochester Cemetary, in shade of oak trees, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed-oblong, 5-6 mm long, ribbed, style persistent
Image Tags: terrestrial dateable seed oblong ribbed style-persistent
Unique Identification: Plant Macrofossil
Taxon: Cyperus odoratus
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: brown, 3 angled, 1-2 mm long, up to 0.5 mm wide at broad end
Image Tags: seed ovate emergent date-with-caution trigonous reticulate
Unique Identification: Plant Macrofossil
Taxon: Cyperus squarrosus
Site name: Cedar River, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: brown, 3 angled. 0.5-1 mm long
Image Tags: seed oblong ovate emergent date-with-caution trigonous style-base-persistent reticulate
Unique Identification: Plant Macrofossil
Taxon: Cyperus strigosus
Site name: Gastank Prairie W of Solon, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: brown, 3 angled, 1-2 mm long, less than 0.5 mm wide at broad end
Image Tags: seed oblong emergent date-with-caution reticulate trigonous
Unique Identification: Plant Macrofossil
Taxon: Doellingeria umbellata
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-cylindric, 2-3 mm long with tapering base; pappus (white hairs) may or may not be present in fossils; lengthwise ridges; sparsely pubescent
Image Tags: terrestrial seed dateable pappus pubescent oblong hairy bristled ridged
Unique Identification: Plant Macrofossil
Taxon: Dulichium arundinaceum
Site name: Nichols Marsh, Muscatine County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong, lens shaped in cross section, 2-4 mm long; long, sturdy, persistent style beak about as long as body
Image Tags: emergent date-with-caution seed style-persistent
Unique Identification: Plant Macrofossil
Taxon: Echinochloa crus-galli
Site name: Three Corner Pond, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic-ovate, 2.5-3.5 mm long; awn may or may not be present; awn 2-4 cm long
Image Tags: terrestrial dateable seed awned bristled ovate
Unique Identification: Plant Macrofossil
Taxon: Echinochloa crus-galli
Site name: Three Corner Pond, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic-ovate, 2.5-3.5 mm long; awn may or may not be present; awn 2-4 cm long
Image Tags: terrestrial dateable seed ovate glabrous smooth veined
Unique Identification: Plant Macrofossil
Taxon: Echinochloa muricata
Site name: Muscotah Marsh, Kansas
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, 2.5-3.5 mm long; spikelet 3-4 mm long; awn 3-10 mm long, sometimes up to 25 mm long
Image Tags: obovate terrestrial bristled dateable seed awned
Unique Identification: Plant Macrofossil
Taxon: Echinochloa muricata
Site name: Muscotah Marsh, Kansas
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: ovate, 2.5-3.5 mm long; acutely tipped; spikelet 3-4 mm long; awn 3-10 mm long, sometimes up to 25 mm long
Image Tags: terrestrial dateable seed ovate acuminate glabrous smooth
Unique Identification: Plant Macrofossil
Taxon: Eleocharis acicularis
Site name: Muskee Lake, Boulder, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, 3 angled, ridged, up to 1 mm long; tubercle (cap on top of seed) cone shaped, constricted at base
Image Tags: seed emergent submerged date-with-caution capped obovate ridged striate
Unique Identification: Plant Macrofossil
Taxon: Eleocharis ovata
Site name: Blackhawk County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lens-shaped, light to dark brown or olive, shiny, 1-1.5 mm long; tubercle (cap on top of seed) flattened-triangular, about as wide as broad top of achene (seed)
Image Tags: seed emergent date-with-caution capped bristled obovate
Unique Identification: Plant Macrofossil
Taxon: Eleocharis palustris
Site name: Kenai Peninsula, AK
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: common species with broad range and variable morphology; 1-2 mm long, yellow to brown; tubercle (cap on top of seed) flattened-triangular, constricted at base
Image Tags: seed emergent date-with-caution capped bristled obovate
Unique Identification: Plant Macrofossil
Taxon: Equisetum fluviatile
Site name: Busching mound springs, Chickasaw County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 4-6 angled, hollow
Image Tags: stem emergent dateable ridged segmented
Unique Identification: Plant Macrofossil
Taxon: Equisetum fluviatile
Site name: Busching mound springs, Chickasaw County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ~9-25 shallow ridges; central cavity large ~4/5 of total stem diameter; other smaller cavities present in stem
Image Tags: stem emergent dateable ridged segmented
Unique Identification: Plant Macrofossil
Taxon: Equisetum variegatum
Site name: Yellowstone National Park, Huckleberry Mountain, WY
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: up to 1 cm long; sharply tipped
Image Tags: emergent dateable ridged segmented
Unique Identification: Plant Macrofossil
Taxon: Equisetum variegatum
Site name: Yellowstone National Park, Huckleberry Mountain, WY
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 1-2.5 cm wide; 5-12 shallow, rough ridges; hollow central cavity 1/3-1/4 of total stem diameter; other smaller cavities present in stem
Image Tags: stem emergent dateable ridged segmented
Unique Identification: Plant Macrofossil
Taxon: Eupatorium altissimum
Site name: Crandic-Coralville bikepath, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong, tapering to base, 2.5-3.5 mm long, 5 sided; speckled with small white dots, base may be white as well; coarse, white pappus may or may not be preserved in sediment
Image Tags: terrestrial dateable seed oblong speckled bristled pappus five-sided
Unique Identification: Plant Macrofossil
Taxon: Eupatorium maculatum
Site name: Busching Mound Springs, Bremer County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong, tapering to base, 2-4 mm long, 5 angled; speckled with small red dots; coarse, white pappus may or may not be preserved in sediment
Image Tags: terrestrial seed dateable oblong linear speckled pappus bristled
Unique Identification: Plant Macrofossil
Taxon: Eupatorium purpureum
Site name: Turkey Creek Road, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong, tapering to base, 3.5-4.5 mm long, indistinctly 5 sided; speckled with small brown-red dots; white base; coarse, white pappus may or may not be preserved in sediment
Image Tags: terrestrial dateable seed oblong ridged speckled pappus bristled
Unique Identification: Plant Macrofossil
Taxon: Eupatorium rugosum
Site name: Finkbine bikepath, in shade, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong, tapering to base, 2-2.5 mm long, 5 sided; glabrous (no hairs/spots); white base; coarse, white pappus may or may not be preserved in sediment
Image Tags: terrestrial dateable seed glabrous oblong five-sided pappus bristled
Unique Identification: Plant Macrofossil
Taxon: Euphorbia corollata
Site name: Rochester Cemetary, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, 2-4 mm long; distinct longitudinal line present; mottled brown and white
Image Tags: terrestrial seed dateable speckled obovate
Unique Identification: Plant Macrofossil
Taxon: Fagus grandifolia
Site name: Pt. Beach State Park, Door County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: sharply triangular, 4 sided, 4-10 mm long
Image Tags: seed terrestrial dateable four-sided
Unique Identification: Plant Macrofossil
Taxon: Fraxinus americana
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fruit linear to oblanceolate, 3-5 cm; wing extending 1/3 the length of the body
Image Tags: terrestrial dateable linear winged
Unique Identification: Plant Macrofossil
Taxon: Fraxinus nigra
Site name: USA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fruit flat, lanceolate to oblanceolate, ~2.5-4 cm x 6-10 mm; very small notch at tip of wing
Image Tags: terrestrial dateable oblong winged notched emarginate
Unique Identification: Plant Macrofossil
Taxon: Fraxinus pennsylvanica
Site name: Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: fruit linear to spatulate, 2.5-7.5 cm long; wing extending ~1/2 the length of body
Image Tags: terrestrial dateable linear winged
Unique Identification: Plant Macrofossil
Taxon: Galium triflorum
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: sub-globose-reniform(bean shaped), 1.5-2 mm; covered with hooked bristles except at attachment scar (see seed in bottom left of image)
Image Tags: seed terrestrial dateable elliptic reniform bristled barbellate
Unique Identification: Plant Macrofossil
Taxon: Gleditsia triacanthos
Site name: Baker land, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial side (top of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakly roundly toothed; petioles pubescent
Image Tags: leaf terrestrial dateable serrate lanceolate oblong toothed pubescent hairy
Unique Identification: Plant Macrofossil
Taxon: Gleditsia triacanthos
Site name: Baker land, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: abaxial side (bottom of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakly roundly toothed; petioles pubescent
Image Tags: leaf terrestrial dateable serrate lanceolate oblong toothed pubescent hairy
Unique Identification: Plant Macrofossil
Taxon: Glyceria sp.
Site name: Restored wetland, Upper Sioux River, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subfossil specimen; obovate, 0.5-1.5 mm; prominent indent at base of seed characterstic of Glyceria; 2 persistent, recurved stigmas; reddish-brown
Image Tags: emergent date-with-caution indented bistigmatic seed subfossilized obovate stigmas-persistent
Unique Identification: Plant Macrofossil
Taxon: Glyceria striata
Site name: Williams Prairie, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate, 0.5-1.5 mm; prominent indent at base of seed characterstic of Glyceria; 2 persistent, recurved stigmas; reddish-brown
Image Tags: seed emergent date-with-caution bistigmatic indented wrinkled stigmas-persistent obovate rugose
Unique Identification: Plant Macrofossil
Taxon: Glyceria striata
Site name: Williams Prairie, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, 0.5-1.5 mm; strongly 7 veined; often purple
Image Tags: emergent date-with-caution obovate veined
Unique Identification: Plant Macrofossil
Taxon: Helianthus grosseratus
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed-oblong, 3-4 mm long; dark lengthwise streaks/stripes/mottles; smooth
Image Tags: terrestrial seed dateable speckled striped striate
Unique Identification: Plant Macrofossil
Taxon: Heteranthera dubia
Site name: Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: broadly elliptic, 1 mm long; longitudinally ridged; both ends (hilum and chalazal) are conspicuos
Image Tags: seed elliptic oblong submerged do-not-date ridged
Unique Identification: Plant Macrofossil
Taxon: Heteranthera limosa
Site name: Stuttgart, AR
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: broadly elliptic, 0.4-0.6 mm long; longitudinally ridged; both ends (hilum and chalazal) are conspicuos
Image Tags: seed submerged do-not-date ridged elliptic oblong ridged
Unique Identification: Plant Macrofossil
Taxon: Hippuris vulgaris
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-cylindric to elliptic, ~2 mm long, 1 mm wide; thick, soft-woody wall
Image Tags: seed elliptic woody emergent date-with-caution
Unique Identification: Plant Macrofossil
Taxon: Hypericum pyramidatum
Site name: DuBuque County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-cylindric, 0.5-1 mm; reticulate surface; marked by lengthwise line; pointed it at one end
Image Tags: seed emergent date-with-caution reticulate
Unique Identification: Plant Macrofossil
Taxon: Impatiens capensis
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, four angled, narrowing at base, ~4 x 2.5 x 2 mm; length wise ridges; surface usually warty or wrinkly
Image Tags: terrestrial seed dateable elliptic four-sided ridged wrinkled rugose
Unique Identification: Plant Macrofossil
Taxon: Iodanthus pinnatifidus
Site name: Washington County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval to spatulate, 1-1.2 cm long; visible attachement point; surface pitted-reticulate;
Image Tags: terrestrial dateable seed pitted foveate reticulate hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Iris virginica
Site name: Cayler Prairie, Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flat, round discs to wedge shaped, 4-6 mm
Image Tags: emergent seed date-with-caution round wedge-shaped
Unique Identification: Plant Macrofossil
Taxon: Isoetes bolanderi
Site name: West Tensleep Lake, WY
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: globose, 0.3-0.5 mm in diameter; ridges trisecting spore into three parts; covered in tubercles (nodules)
Image Tags: spore submerged do-not-date ridged globose round bumpy tuberculate
Unique Identification: Plant Macrofossil
Taxon: Isoetes echinospora
Site name: Devils Lake Wisconsin, S.W. Corner, Sauk County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: globose, 0.4-0.5 mm in diameter; covered in prickly tubercles (warty bumps) ridges trisecting spore into three parts
Image Tags: spore submerged do-not-date ridged globose round bristled tuberculate
Unique Identification: Plant Macrofossil
Taxon: Juncus effusus
Site name: Walton County, FL
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval, ~0.5 mm long; dark terminal appendages tapering at ends; cellular reticulations clearly visible in cell wall
Image Tags: seed emergent date-with-caution reticulate elliptic ovate
Unique Identification: Plant Macrofossil
Taxon: Juncus pelocarpus
Site name: Jasper County, IN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate, 0.3-0.5 mm long; dark terminal appendage at top of seed; cellular reticulations clearly visible in cell wall
Image Tags: seed emergent date-with-caution reticulate elliptic ovate
Unique Identification: Plant Macrofossil
Taxon: Kalmia angustifolia
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: abaxial (bottom) side shown; elliptic-oblong, 2-5 cm long, 0.5-2 cm wide; bottom of leaf paler than top; tips may be rounded or pointed; leathery; short petioles; margins entire, may be curled under leaf
Image Tags: leaf terrestrial dateable elliptic revolute
Unique Identification: Plant Macrofossil
Taxon: Kalmia angustifolia
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial (top) side shown; elliptic-oblong, 2-5 cm long, 0.5-2 cm wide; bottom of leaf paler than top; tips may be rounded or pointed; leathery; short petioles; margins entire, may be curled under leaf
Image Tags: leaf terrestrial dateable elliptic revolute
Unique Identification: Plant Macrofossil
Taxon: Kalmia angustifolia
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-linear, ~1 mm long; striated surface
Image Tags: seed terrestrial dateable striate grooved oblong
Unique Identification: Plant Macrofossil
Taxon: Kalmia angustifolia
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, 5 sectioned capsule, 2.5-4.5 mm in diameter
Image Tags: terrestrial dateable round
Unique Identification: Plant Macrofossil
Taxon: Kalmia angustifolia
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, 5 sectioned capsule, 2.5-4.5 mm in diameter
Image Tags: terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Laportea canadensis
Site name: Baker Land, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flattened-ovate, 1.5-2 mm long; marginal seam that is lighter in color than seed body; short beaked
Image Tags: seed flattened round compressed terrestrial dateable beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Larix laricina
Site name: St.Louis County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Base of needle on righthand side, except middle needle oriented with base on lefthand side. Note blunt tip, linear shape, 3-sided in cross section, 10-25 mm long.
Image Tags: leaf needle terrestrial dateable linear blunt ridged
Unique Identification: Plant Macrofossil
Taxon: Larix laricina
Site name: St.Louis County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: seed cone; 1-2 cm long, 0.5-1 cm wide, lustrous (shiny) brown-red scales
Image Tags: cone terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Larix laricina
Site name: St.Louis County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Yellow-brown, male cones pictured. Note bud scars on twig surface.
Image Tags: twig terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Larix laricina
Site name: St.Louis County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Winged, wing may be damaged/missing from macrofossils.
Image Tags: seed terrestrial winged dateable
Unique Identification: Plant Macrofossil
Taxon: Leersia oryzoides
Site name: Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed obovate, 2-3.5 mm long; linear hilum
Image Tags: seed terrestrial dateable obovate
Unique Identification: Plant Macrofossil
Taxon: Leersia oryzoides
Site name: Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flattened oval, 4-5 mm long, 1-2 mm wide; lemma with conspicous bristles
Image Tags: bristled terrestrial dateable flattened elliptic
Unique Identification: Plant Macrofossil
Taxon: Linum striatum
Site name: Early County, GA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: wedge shaped, like narrow sector of sphere, 1-2 mm long; one side nearly straight
Image Tags: terrestrial seed dateable semicircular wedge-shaped
Unique Identification: Plant Macrofossil
Taxon: Lobelia dortmanna
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-obovate, ~0.5-0.7 mm long; square at base; grooved striations
Image Tags: obovate oblong grooved striate
Unique Identification: Plant Macrofossil
Taxon: Lotus corniculatus
Site name: Finkbine bike trail, Iowa City, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate, 1-1.5 mm long; variable color; prominent hilum (attachment scar)
Image Tags: seed terrestrial dateable hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Luzula acuminata
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subglobose, 1-1.2 mm; clear-yellow elaiosome (lipid rich deposit used to attract insect dispersal) attached to seed
Image Tags: seed terrestrial dateable globose round
Unique Identification: Plant Macrofossil
Taxon: Luzula spicata
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, ~1 mm long; dimpled at top of seed
Image Tags: seed terrestrial dateable indented obovate base-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Lycopus americanus
Site name: lower Finkbine wetland, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: abaxial (bottom) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed
Image Tags: leaf terrestrial dateable lanceolate toothed
Unique Identification: Plant Macrofossil
Taxon: Lycopus americanus
Site name: lower Finkbine wetland, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial (top) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed
Image Tags: leaf terrestrial dateable lanceolate toothed
Unique Identification: Plant Macrofossil
Taxon: Lycopus americanus
Site name: lower Finkbine wetland, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate to compressed triangular, 1-2 mm long; white mouth at seed attachment base; globules on inner face; globules and endosperm often missing in fossil specimens
Image Tags: seed terrestrial dateable obovate base-conspicuous hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Medicago sativa
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed kidney shaped, 2-3 mm long; narrow line runs obliquely on each face from hilum (seed attachment scar)
Image Tags: seed terrestrial dateable reniform hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Menyanthes trifoliata
Site name: bog near Homer, Kenai Peninsula, AK
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic-oval, ~2.5 mm long
Image Tags: seed terrestrial dateable elliptic hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Morus rubra
Site name: Oskaloosa, Mahaska County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval-lenticular to ovate, 1.5-3 mm long; a light colored, slender attachment stalk appressed to thinnest edge of seed; inner surface marked with cellular reticulations
Image Tags: seed terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Myriophyllum pinnatum
Site name: Lucas County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: seed submerged ridged spiny do-not-date
Unique Identification: Plant Macrofossil
Taxon: Myriophyllum spicatum
Site name: Devil's Lake, Sauk County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 12-21 leaflet pairs
Image Tags: leaf submerged do-not-date
Unique Identification: Plant Macrofossil
Taxon: Myriophyllum spicatum
Site name: Devil's Lake, Sauk County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: seed submerged do-not-date obovate wedge-shaped
Unique Identification: Plant Macrofossil
Taxon: Najas flexilis
Site name: Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Elliptic, slender, seed coat shiny, up to 3.2 mm long, 1/3 as thick as long, marked with 30-40 longitudinal rows of obscure pits across the middle, covered by a yellow coat. Seed halves commonly found in sediment cores.
Image Tags: submerged do-not-date reticulate pitted foveate elliptic
Unique Identification: Plant Macrofossil
Taxon: Najas guadalupensis
Site name: Clear Lake, Cerro Gordo County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, slender, seed coat dull, 1.2-3.8 mm long depending on subspecies. Deeply pitted, 20-60 longitudinal pits.
Image Tags: submerged do-not-date pitted foveate reticulate elliptic
Unique Identification: Plant Macrofossil
Taxon: Najas marina
Site name: Seneca County, NY
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, seed coat dull, 2.2-4.5 mm long. Pits 3-4 angles, longer than wide, distributed irregularly across seed coat.
Image Tags: seed submerged foveate do-not-date elliptic pitted reticulate
Unique Identification: Plant Macrofossil
Taxon: Nelumbo lutea
Site name: Mississippi River, Soutwestern WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: globose, ~ 1 cm across; somewhat resembles an acorn; seed wall very hard
Image Tags: floating-leaved seed date-with-caution globose
Unique Identification: Plant Macrofossil
Taxon: Nuphar advena
Site name: Cedar Rapids, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ellipsoid to obovoid, 3-5 mm long, 2-3 mm wide; rounded on one side and compressed-angled on other; circular hole at base; yellow-brown; thick walled
Image Tags: floating-leaved seed date-with-caution
Unique Identification: Plant Macrofossil
Taxon: Nuphar lutea
Site name: USA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ellipsoid to obovoid, 3-5 mm long, 2-3 mm wide; rounded on one side and compressed-angled on other; circular hole at base; yellow-brown; thick walled
Image Tags: floating-leaved seed ridged date-with-caution elliptic obovate base-conspicuous hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Nuphar lutea subsp. polysepala
Site name: Bighorn Mountains, WY
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovoid, 4-5.5 mm long, 2-3 mm wide; rounded on one side and compressed-angled on other; circular hole at base; yellow-brown; thick walled
Image Tags: floating-leaved seed date-with-caution obovate ridged base-conspicuous hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Nymphaea odorata
Site name: Baker Prairie Pond, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: globose to ellipsoid, 2-4 mm long, 2-2.5 mm wide; slight ridge on one side and small attachment scar at base; olive green to brown; fragile wall, often cracked/fragmented in sediment samples.
Image Tags: floating-leaved seed date-with-caution globose round obovate ridged base-conspicuous hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Nyssa sylvatica
Site name: Hampshire County, MA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed ovoid to ellipsoid, ~7 x 5 x 3 mm; several grooves/stripes on each face
Image Tags: seed terrestrial dateable elliptic woody
Unique Identification: Plant Macrofossil
Taxon: Ostrya virginiana
Site name: Peninsula State Park, Door County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate 1-3 cm, enclosing seed, slightly inflated; bristly at base
Image Tags: seed terrestrial dateable veined inflated
Unique Identification: Plant Macrofossil
Taxon: Ostrya virginiana
Site name: Peninsula State Park, Door County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed lanceolate-ellipsoid, ~4 x 2.2 x 1 mm; thin, brownish, papery coat lining inside of wall; smooth, unribbed surface (as opposed to ribbed surface of Carpinus)
Image Tags: terrestrial dateable ovate glabrous smooth
Unique Identification: Plant Macrofossil
Taxon: Ostrya virginiana
Site name: Peninsula State Park, Door County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: twig bud terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Phragmites australis
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: unequal glumes; prominent veins on longer glume
Image Tags: emergent date-with-caution veined
Unique Identification: Plant Macrofossil
Taxon: Phragmites australis
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: unequal glumes; prominent veins on longer glume
Image Tags: emergent date-with-caution veined
Unique Identification: Plant Macrofossil
Taxon: Picea glauca
Site name: Gooseberry Falls State Park, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: linear, 1.5-2 cm long; 4 angled in cross-section; stiff, sharp tipped
Image Tags: leaf needle terrestrial dateable pointed linear pitted foveate
Unique Identification: Plant Macrofossil
Taxon: Picea glauca
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: biconvex, 2-3 mm long; wing 5-8 mm long
Image Tags: seed terrestrial dateable biconvex ovate winged
Unique Identification: Plant Macrofossil
Taxon: Picea mariana
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: biconvex, 1.5-2 mm long; wing 2-5 mm long
Image Tags: seed terrestrial dateable winged biconvex obovate
Unique Identification: Plant Macrofossil
Taxon: Picea mariana
Site name: open woodland south of Dawson, Yukon, Canada
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: Note blunt tip, base of needle on right hand side of photograph. Four-angled in cross section, 6-18 mm long.
Image Tags: leaf linear needle terrestrial dateable blunt arched pitted foveate ridged
Unique Identification: Plant Macrofossil
Taxon: Platanus occidentalis
Site name: Boulder, Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lanceolate, ~8-9 x 1-1.5 x 1 mm; tuft of stiff hairs pointed upward from base (oriented as top in image); style base persistent (located on bottom of image)
Image Tags: seed terrestrial dateable lanceolate hairy bristled pappus style-base-persistent
Unique Identification: Plant Macrofossil
Taxon: Platanus occidentalis
Site name: Boulder, Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: twig bud terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Polygonum amphibium
Site name: marsh near Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lens shaped achene, 2-4 mm long; smooth, shiny, dark brown
Image Tags: emergent date-with-caution
Unique Identification: Plant Macrofossil
Taxon: Polygonum amphibium
Site name: marsh near Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lens shaped achene, 2-4 mm long; smooth, shiny, dark brown
Image Tags: seed emergent date-with-caution biconvex glabrous smooth
Unique Identification: Plant Macrofossil
Taxon: Polygonum lapathifolium
Site name: Little Storm Lake, Buena Vista County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lens shaped, 2-3 mm long; smooth, shiny
Image Tags: seed emergent terrestrial date-with-caution biconvex bistigmatic stigmas-persistent glabrous smooth
Unique Identification: Plant Macrofossil
Taxon: Polygonum sagittatum
Site name: MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: triangular, 2-3 mm long; shiny, black
Image Tags: seed terrestrial glabrous smooth trigonous dateable
Unique Identification: Plant Macrofossil
Taxon: Polygonum scandens
Site name: Finkbine bike trail, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: triangular in cross section, ~ 4 mm long, ~3.5 mm wide at widest point; smooth and shiny; perianth (outer covering) most likely not present in sediment samples
Image Tags: seed terrestrial dateable trigonous glabrous smooth
Unique Identification: Plant Macrofossil
Taxon: Pontederia cordata
Site name: Swan Lake, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: triangular, 5-10 mm long; three chambered, only one chamber develops seed;ridged; horned at base
Image Tags: emergent date-with-caution
Unique Identification: Plant Macrofossil
Taxon: Pontederia cordata
Site name: Swan Lake, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate-elliptic, 3-4 mm; 20-25 lengthwise lines (not visible in imaged specimens); top of seed depressed
Image Tags: seed emergent indented date-with-caution
Unique Identification: Plant Macrofossil
Taxon: Populus tremuloides
Site name: Fond du Lac Reservation
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate, minute, 0.5-0.8 mm; covered in white hairs; conspicuous white-light yellow base
Image Tags: ovate hairy seed terrestrial dateable comose base-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Populus tremuloides
Site name: Peninsula State Park, Door County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 2-8 mm; smooth, glabrous
Image Tags: bud-scale terrestrial dateable glabrous
Unique Identification: Plant Macrofossil
Taxon: Potamogeton amplifolius
Site name: Muscatine County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: earlike shape (with covering removed; covering is ovate in shape), 4-5 mm long; pronounced beak up to 1 mm long; indented along margin and face; coiled embryo
Image Tags: submerged indented do-not-date seed ear-shaped beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Potamogeton amplifolius
Site name: Muscatine County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: earlike shape (with covering removed), 4-5 mm long; pronounced beak up to 1 mm long; coiled embryo
Image Tags: submerged coiled do-not-date seed ear-shaped beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Potamogeton epihydrus
Site name: Penobscot County, ME
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 2-3 mm long, round with pronounced marginal ridge and small beak (at end of ridge on top of seed)
Image Tags: seed ear-shaped submerged do-not-date beaked rostrate ridged
Unique Identification: Plant Macrofossil
Taxon: Potamogeton epihydrus
Site name: Penobscot County, ME
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 2-3 mm long, round with pronounced ridge and small beak (at top of seed)
Image Tags: ear-shaped beaked rostrate coiled ridged seed submerged do-not-date
Unique Identification: Plant Macrofossil
Taxon: Potamogeton natans
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 3-5 mm long; short beak (near top of seed); loose, shiny, inflated covering often preserved in lake sediments; in photo covering is dried and shriveled
Image Tags: seed submerged do-not-date ear-shaped beaked rostrate inflated
Unique Identification: Plant Macrofossil
Taxon: Potamogeton natans
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: 3-5 mm long; short beak (pictured on top of seed); loose, shiny, inflated covering often preserved in lake sediments; in photo covering is dried and shriveled
Image Tags: seed submerged do-not-date coiled ear-shaped beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Potamogeton richardsonii
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: earlike shape (with covering removed), 2-4 mm long; short beaked; indented along margin and face; coiled embryo
Image Tags: submerged do-not-date seed indented ear-shaped beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Potamogeton richardsonii
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: earlike shape (with covering removed), 2-4 mm long; short beaked; indented along margin and face; coiled embryo
Image Tags: submerged do-not-date seed coiled beaked rostrate ear-shaped
Unique Identification: Plant Macrofossil
Taxon: Potamogeton sp.
Site name: Rice Portage Lake, Carlton County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subfossil embryo; ear-shaped; small size suggests that embryo is immature; connections to outer covering visible in image
Image Tags: seed coiled submerged do-not-date subfossilized ear-shaped
Unique Identification: Plant Macrofossil
Taxon: Potamogeton sp.
Site name: Rice Portage Lake, Carlton County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subfossil fruit; ear-shaped; small size suggests that embryo is immature
Image Tags: seed submerged do-not-date subfossilized ear-shaped indented
Unique Identification: Plant Macrofossil
Taxon: Potamogeton zosteriformis
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: earlike shape (with covering removed), 4-5 mm long; very short, blunt beak; indented along margin and face; coiled embryo
Image Tags: submerged do-not-date seed indented ear-shaped beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Potamogeton zosteriformis
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: earlike shape (with covering removed), 4-5 mm long; very short, blunt beak; indented along margin and face; coiled embryo
Image Tags: ear-shaped submerged do-not-date seed coiled beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Potentilla anserina
Site name: Sheboygan County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: reniform with a straight edge; 1-1.5 mm long; seam bisecting arched side of seed
Image Tags: seed terrestrial emergent date-with-caution reniform arched indented
Unique Identification: Plant Macrofossil
Taxon: Potentilla palustris
Site name: Tern Lake, Kenai Peninsula, AK
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ear shaped, arched, with rounded back and straight to concave edge, shaped similar to Potamogeton; ~ 1 mm long
Image Tags: seed ear-shaped terrestrial emergent date-with-caution
Unique Identification: Plant Macrofossil
Taxon: Prunus serotina
Site name: USA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: pit spheroid, 7-9 mm in diameter; low ridge along one side (visible on left side of top right pit in image); inner surface of pit is minutely cellular-pitted; hole on attachment end of pit; ~ 10 mm thick with flesh, dark purple to black colored
Image Tags: fleshy pitted terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Prunus serotina
Site name: Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: none
Image Tags: twig bud terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Prunus serotina
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: pit globose, 7-9 mm in diameter; low ridge along one side (visible on left side of top right pit in image); inner surface of pit is minutely cellular-pitted; hole on attachment end of pit; ~ 10 mm thick with flesh, dark purple to black colored
Image Tags: pitted terrestrial dateable ridged woody
Unique Identification: Plant Macrofossil
Taxon: Quercus macrocarpa
Site name: Clearwater County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: nut depressed to narrowly ovate, 2-5 cm long, 2-4 cm wide; cup covering 1/3 to 3/4 of nut; marginal cup scales awned, forming a fringe; inside of cup pubescent
Image Tags: seed terrestrial dateable ovate woody scaled awned fringed
Unique Identification: Plant Macrofossil
Taxon: Quercus macrocarpa
Site name: Clearwater County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: nut depressed to narrowly ovoid, 2-5 cm long, 2-4 cm wide; cup covering 1/3 to 3/4 of nut; marginal cup scales awned, forming a fringe; inside of cup pubescent
Image Tags: seed terrestrial dateable scaled awned fringed
Unique Identification: Plant Macrofossil
Taxon: Quercus palustris
Site name: Missouri Botanical Garden, East Baton Rouge County, MO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: nut 10-16 mm long, 9-15 mm wide; cup shallow, saucer shaped, covering 1/5 to 1/4 of nut
Image Tags: seed terrestrial dateable woody round globose
Unique Identification: Plant Macrofossil
Taxon: Quercus palustris
Site name: Missouri Botanical Garden, East Baton Rouge County, MO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: nut 10-16 mm long, 9-15 mm wide; cup shallow, saucer shaped, covering 1/5 to 1/4 of nut
Image Tags: seed terrestrial dateable scaled
Unique Identification: Plant Macrofossil
Taxon: Quercus velutina
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: nut ovoid, 6-13 mm long; cup bowl shaped, covering 1/2 of nut; large, pubescent scales; marginal scales projecting, forming fringe
Image Tags: seed terrestrial dateable ovate woody scaled pubescent fringed
Unique Identification: Plant Macrofossil
Taxon: Quercus velutina
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: nut ovoid, 6-13 mm long; cup bowl shaped, covering 1/2 of nut; large, pubescent scales; marginal scales projecting, forming fringe
Image Tags: seed terrestrial dateable scaled fringed pubescent
Unique Identification: Plant Macrofossil
Taxon: Ranunculus abortivus
Site name: Iowa Lakeside Laboratory, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lenticular in cross-section, elliptic in outline, ~1.5 mm long; beak present, but very short
Image Tags: seed terrestrial dateable style-base-persistent ear-shaped
Unique Identification: Plant Macrofossil
Taxon: Ranunculus aquatilis
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ear shaped to reniform, 1-1.5 mm long, shape similar to Potamogeton; short, thin, straight beak sometimes present
Image Tags: seed submerged do-not-date beaked rostrate reniform ear-shaped
Unique Identification: Plant Macrofossil
Taxon: Ranunculus hispidus
Site name: Baker property, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flat-lenticular in cross-section, obovate in outline, 2-3.5 mm; prominently beaked and sometimes with marginal wing
Image Tags: seed terrestrial dateable obovate beaked winged rostrate
Unique Identification: Plant Macrofossil
Taxon: Rhynchospora alba
Site name: Mt. Desert Island, ME
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: lens shaped, 1-2 mm long; tubercle cap triangular; smooth surface; bristles
Image Tags: seed emergent date-with-caution capped bristled beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Rorippa palustris
Site name: Three Corner Pond, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: roundish-ovate (unlike others in family), less than 0.5 mm; reticulate dimpled
Image Tags: terrestrial seed dateable reticulate bumpy colliculate
Unique Identification: Plant Macrofossil
Taxon: Rudbeckia triloba
Site name: Baker land, Cedar County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong, tapering slightly to base; 2-2.5 mm long; 4 sided
Image Tags: terrestrial dateable seed oblong four-sided striate
Unique Identification: Plant Macrofossil
Taxon: Rumex maritimus
Site name: margin of Little Storm Lake, Buena Vista County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: triangular, sides convex, 1-1.5 mm; smooth, shiny; embryo attached to one side (rather than to a corner as in Polygonum)
Image Tags: seed terrestrial dateable trigonous smooth glabrous
Unique Identification: Plant Macrofossil
Taxon: Rumex occidentalis
Site name: dry marsh north of Wing, Burleigh County, ND
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: triangular, sides slightly convex, 1-2 mm; smooth, shiny; embryo attached to one side (rather than to a corner as in Polygonum)
Image Tags: seed terrestrial dateable glabrous smooth trigonous
Unique Identification: Plant Macrofossil
Taxon: Sagittaria latifolia
Site name: not specified
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: obovate, 2-4 mm long; beak projecting horizontally, 1-2 mm long; winged
Image Tags: emergent date-with-caution seed winged beaked rostrate obovate
Unique Identification: Plant Macrofossil
Taxon: Sagittaria rigida
Site name: Dickenson County, IA
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: obovate, 2-4 mm long; beak projecting vertically, 1-1.5 mm; narrowly winged relative to other Sagittaria spp.
Image Tags: emergent date-with-caution seed winged beaked rostrate obovate reticulate
Unique Identification: Plant Macrofossil
Taxon: Salix amygdaloides
Site name: Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial side of leaf (top of leaf) pictured; thin, lanceolate to lance-ovate, 5-10 x 1-3.5 cm; 3-6 times as long as wide, abruptly acuminate (tapering to a point); serrate; abaxial side (bottom of leaf) with cellular pattern similar to cracked mud
Image Tags: leaf terrestrial dateable serrate tapered acuminate lanceolate
Unique Identification: Plant Macrofossil
Taxon: Salvia lyrata
Site name: Estill County, KY
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic compressed-triangular, 2-2.5 mm long; surface marbled with streaks and/or netted lines
Image Tags: seed terrestrial dateable elliptic colliculate bumpy veined speckled
Unique Identification: Plant Macrofossil
Taxon: Sambucus canadensis
Site name: Verona, Dane County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic-ovate in outline compressed triangular in cross section, 2-3 mm long; very slightly arched inward; crosswise wrinkled; inner wall woody
Image Tags: seed terrestrial dateable elliptic obovate wrinkled rugose woody
Unique Identification: Plant Macrofossil
Taxon: Sanicula gregaria
Site name: Benton County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: sub-globose, 3-5 mm, very bristly to the base
Image Tags: terrestrial dateable seed planoconvex bristled barbellate
Unique Identification: Plant Macrofossil
Taxon: Saxifraga rivularis
Site name: Beartooth Plateau, Carbon County, MT
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, 0.3-0.5 mm long; finely pitted surface; embryo folded so that lengthwise dark brown line is visible
Image Tags: seed pitted foveate terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Scheuchzeria palustris
Site name: Van Meer Bog, Alger County, MI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flattened elliptic, 5-8 mm long; split on one side where seeds released
Image Tags: emergent date-with-caution capsule elliptic
Unique Identification: Plant Macrofossil
Taxon: Scheuchzeria palustris
Site name: Van Meer Bog, Alger County, MI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, 3.5-5 mm long; lengthwise ridge is diagnostic of seed
Image Tags: elliptic emergent date-with-caution seed ridged
Unique Identification: Plant Macrofossil
Taxon: Schoenoplectus acutus
Site name: Palo Alto County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, flat on one side, convex on other, 2-3 mm long, beak (on broad end of seed) up to 5 mm long, bristles (hairs) not always present
Image Tags: seed emergent date-with-caution bristled beaked rostrate obovate planoconvex
Unique Identification: Plant Macrofossil
Taxon: Schoenoplectus tabernaemontani
Site name: USA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flat on one side, convex on other, 2-3 mm long, beak (on broad end of seed) up to 0.2 mm long, bristles (hairs) not always present
Image Tags: seed emergent date-with-caution bristled beaked obovate planoconvex rostrate
Unique Identification: Plant Macrofossil
Taxon: Scirpus atrovirens
Site name: Linn County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: tan to white, 3 angled; ~ 1mm long, beak (on broad end of seed) ~0.2 mm long, bristles (hairs) not always present
Image Tags: seed emergent date-with-caution bristled trigonous beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Scirpus cyperinus
Site name: Monroe County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flattened trigonous, 0.5-1 mm long; short beak; very long bristles easily attach/tangle
Image Tags: emergent date-with-caution seed trigonous bristled comose hairy beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Scirpus cyperinus
Site name: Monroe County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: flattened trigonous, 0.5-1 mm long; short beak; very long bristles easily attach/tangle
Image Tags: emergent date-with-caution seed trigonous bristled beaked rostrate
Unique Identification: Plant Macrofossil
Taxon: Scirpus fluviatus
Site name: dry swale near Green Lake, Kandiyohi County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded trigonous, 3-5 mm long; beak up to 0.5 mm long; bristled
Image Tags: emergent date-with-caution bristled beaked seed trigonous rostrate
Unique Identification: Plant Macrofossil
Taxon: Silene acualis
Site name: tundra above Bluefish Caves near Old Crow, Yukon, Canada
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, kidney shaped discs, 0.5-1.5 mm long; ridged margins; lanceolate tubercles (warty bumps) in concentric rows
Image Tags: seed warty tuberculate terrestrial dateable bumpy reniform
Unique Identification: Plant Macrofossil
Taxon: Silene nivea
Site name: Delaware County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: rounded, kidney shaped, 0.5-1.5 mm long; dark tipped, cone shaped tubercles (warty bumps) in concentric rows, increasing in size away from the hilum (seed base); base of tubercles bordered by zig-zag pattern
Image Tags: seed warty tuberculate terrestrial dateable round reniform bumpy
Unique Identification: Plant Macrofossil
Taxon: Silene stellata
Site name: Floyd County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed kidney shaped, 0.5- 1 mm; rounded, irregular shaped tubercles (warty bumps) concentric from hilum (seed base)
Image Tags: seed warty tuberculate terrestrial dateable round bumpy colliculate reniform
Unique Identification: Plant Macrofossil
Taxon: Solidago gigantea
Site name: Lake Carlson, Dakota County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-cylindric, 1-2 mm long with tapering base; pubescent; pappus (short white bristles) may or may not be present in fossils
Image Tags: terrestrial seed dateable pappus pubescent oblong bristled hairy
Unique Identification: Plant Macrofossil
Taxon: Sparganium angustifolium
Site name: Muskee Lake, Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: spindle shaped, 5-7 mm long; abruptly contracted to a beak 1-3 mm long
Image Tags: emergent date-with-caution fruit beaked rostrate lanceolate
Unique Identification: Plant Macrofossil
Taxon: Sparganium angustifolium
Site name: Muskee Lake, Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: spindle shaped, 5-7 mm long; abruptly contracted to a beak 1-3 mm long
Image Tags: emergent date-with-caution seed ovate
Unique Identification: Plant Macrofossil
Taxon: Sparganium eurycarpum
Site name: Mississppi River near Potosi, Grant County, WI
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, 6-8 mm long, 4-7 mm wide; flattened top; beak 2-4 mm long
Image Tags: emergent date-with-caution seed obovate style-base-persistent
Unique Identification: Plant Macrofossil
Taxon: Staphylea trifolia
Site name: Stranger Creek, KS
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, 5-7 mm long; conspicuous micropyle opening (hole at seed base); smooth, shiny
Image Tags: seed elliptic terrestrial dateable indented base-conspicuous hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Stellaria aquatica
Site name: Benton County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval-orbicular, ~1 mm long; surface is hoarfrost patterned; margins covered in large, rounded tubercles (warty bumps)
Image Tags: seed warty tuberculate terrestrial dateable bumpy round
Unique Identification: Plant Macrofossil
Taxon: Stellaria graminea
Site name: not specified
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval-orbicular, ~1 mm long; covered in dendritic (branched projections) tubrercles (warty bumps)
Image Tags: seed warty tuberculate terrestrial dateable bumpy
Unique Identification: Plant Macrofossil
Taxon: Stellaria longifolia
Site name: Lake Itasca, Clearwater County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oval-orbicular, ~1 mm long; rough, bumpy texture, but generally much less so than other members of family
Image Tags: seed bumpy terrestrial elliptic dateable wrinkled rugose undulate
Unique Identification: Plant Macrofossil
Taxon: Stellaria media
Site name: Baker window well, Coralville, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: orbicular, ~1 mm long; pinched hilum (seed base); covered in angular-rounded tubercles (warty bumps); fewer tubercles relative to other spp. In family
Image Tags: seed warty tuberculate terrestrial dateable bumpy hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Strophostyles helvola
Site name: Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-compressed; 3-8 mm long; dry, grayish outer coating and black underneath; white, oblong hilum bordered by black
Image Tags: seed terrestrial dateable hilum-conspicuous oblong
Unique Identification: Plant Macrofossil
Taxon: Taenidia integerrima
Site name: Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: crescent-wedge shaped , 4-5 mm long, 3-4 mm wide; slightly compressed laterally, shallow ribbed
Image Tags: terrestrial dateable seed ribbed wedge-shaped semicircular
Unique Identification: Plant Macrofossil
Taxon: Thalictrum dioicum
Site name: Nerstrand Woods State Park, Rice County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: elliptic, 2.5-4 mm long; very strongly ribbed; nearly symmetrical
Image Tags: seed terrestrial dateable elliptic ribbed
Unique Identification: Plant Macrofossil
Taxon: Tilia americana
Site name: Iowa Lakeside Laboratory, Dickenson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: globose, 6-10 mm in diameter; pubescent, hard
Image Tags: seed terrestrial dateable globose pubescent woody
Unique Identification: Plant Macrofossil
Taxon: Triodanis perfoliata
Site name: Williams Prairie, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed elliptic, biconvex, less than 0.5 mm long; glossy
Image Tags: terrestrial dateable seed elliptic biconvex smooth glabrous
Unique Identification: Plant Macrofossil
Taxon: Typha angustifolia
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-elliptic, elongate, 0.8-1 mm long; whorled white pappus may be present; small, conical nipple on truncate end
Image Tags: emergent date-with-caution seed pappus hairy speckled style-persistent
Unique Identification: Plant Macrofossil
Taxon: Typha angustifolia
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-elliptic, elongate, 0.8-1 mm long; whorled white pappus may be present; small, conical nipple on truncate end
Image Tags: emergent date-with-caution seed pappus hairy speckled style-persistent
Unique Identification: Plant Macrofossil
Taxon: Typha latifolia
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: oblong-elliptic, elongate, 0.8-1.5 mm long; whorled white pappus may be present; small, conical nipple on truncate end
Image Tags: emergent date-with-caution seed pappus hairy style-persistent speckled
Unique Identification: Plant Macrofossil
Taxon: Ulmus americana
Site name: Boulder, Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: buds glabrous
Image Tags: twig bud terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Ulmus americana
Site name: Boulder, Boulder County, CO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: buds glabrous
Image Tags: bud-scale terrestrial dateable glabrous smooth
Unique Identification: Plant Macrofossil
Taxon: Utricularia vulgaris
Site name: Three Corner Pond, Dickinson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: angular 5-10 sided, ~ 0.5 mm long; reticulate pattern of cell wall clearly visible
Image Tags: seed angular free-floating do-not-date reticulate
Unique Identification: Plant Macrofossil
Taxon: Vaccinium oxycoccos
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: red, globose, 6-12 mm wide
Image Tags: terrestrial dateable globose fleshy
Unique Identification: Plant Macrofossil
Taxon: Vaccinium oxycoccos
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: abaxial (bottom) side shown; ovate to narrowly triangular, 2-10 mm long, 1-3 mm wide; bottom of leaf much paler than top; tips may be rounded or pointed; leathery
Image Tags: leaf terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Vaccinium oxycoccos
Site name: Hubbard County, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: adaxial (top) side shown; ovate to narrowly triangular, 2-10 mm long, 1-3 mm wide; bottom of leaf much paler than top; tips may be rounded or pointed; leathery
Image Tags: leaf terrestrial dateable
Unique Identification: Plant Macrofossil
Taxon: Vallisneria americana
Site name: Cerro Gordo County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: ovate-lanceolate, 1.5-2.5 mm long; white hilum (attachment scar) with black border
Image Tags: seed submerged do-not-date obovate oblong hilum-conspicuous base-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Verbena hastata
Site name: MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: compressed-oblong, rounded triangular in cross section 1.5-3 mm long; rounded side is ridged lengthwise; cross ridges also present; margins narrowly flanged; very short, whitish hairs sometimes present
Image Tags: seed oblong emergent terrestrial date-with-caution ridged hilum-conspicuous base-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Verbena hastata
Site name: Restored wetland, Upper Sioux River, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: subfossil specimen; compressed-oblong, rounded triangular in cross section 1.5-3 mm long; prominent seed sttachment scar; rounded side is ridged lengthwise; cross ridges also present; margins narrowly flanged; very short, whitish hairs sometimes present
Image Tags: seed emergent terrestrial dateable ridged oblong base-conspicuous hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Viola papilionacea
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate-elliptic, 1.8-2.2 mm long; prominent elongated white ridge on one side of seed attachement scar (raphe); mottled brown
Image Tags: terrestrial dateable seed speckled base-conspicuous ridged obovate
Unique Identification: Plant Macrofossil
Taxon: Viola pedata
Site name: Ciha property, Johnson County, IA
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: obovate, 1.6-2.0 mm long; prominent elongated white ridge along base of seed (raphe)
Image Tags: terrestrial dateable seed obovate ridged base-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Zannichellia palustris
Site name: U.S.A.
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: arched-oblong, body 2-3 mm long; flattish; stalked at one end, style base persisting on other; spinelike projections along each edge of seed
Image Tags: seed submerged do-not-date spiny style-persistent
Unique Identification: Plant Macrofossil
Taxon: Zizania aquatica
Site name: St. Louis, MO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: floret awl-shaped, 1-2 cm long, tapering to an awn 3-6 cm long; seed cylyndric, 1-2 cm long
Image Tags: emergent date-with-caution seed awned
Unique Identification: Plant Macrofossil
Taxon: Zizania aquatica
Site name: MN
Light type: Reflected Light
Magnification: 8.0
Submitted by: Jimmy Marty
Notes: none
Image Tags: emergent date-with-caution seed oblong hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Zizania palustris
Site name: St. Louis, MO
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: floret awl-shaped, 1-2 cm long, tapering to an awn 3-6 cm long; seed oblong, 1-2 cm long
Image Tags: emergent date-with-caution seed oblong hilum-conspicuous
Unique Identification: Plant Macrofossil
Taxon: Zizania palustris
Site name: Fond du Lac Reservation, MN
Light type: Reflected Light
Magnification: not specified
Submitted by: Jimmy Marty
Notes: floret awl-shaped, 1-2 cm long, tapering to an awn 3-6 cm long; seed cylyndric, 1-2 cm long
Image Tags: emergent date-with-caution seed awned