oval to spatulate, 1-1.2 cm long; visible attachement point; surface pitted-reticulate;
elliptic compressed-triangular, 2-2.5 mm long; surface marbled with streaks and/or netted lines
fruit flat, lanceolate to oblanceolate, ~2.5-4 cm x 6-10 mm; very small notch at tip of wing
obovate, 2.5-3.5 mm long; spikelet 3-4 mm long; awn 3-10 mm long, sometimes up to 25 mm long
obovate, 1.6-2.0 mm long; prominent elongated white ridge along base of seed (raphe)
oblong-cylindric, 2-3 mm long with tapering base; pappus (white hairs) may or may not be present in fossils; lengthwise r...
oblong-cylindric, 1-2 mm long with tapering base; pubescent; pappus (short white bristles) may or may not be present in f...
compressed-elliptic, 0.5-1 mm long; attachment point slightly darker; ridged longitudinally due to bent embryo
angular-ovate to kidney shaped, 0.75-1 mm long; covered in many small tubercles (warty bumps) beginning at hilum (base) a...
oval-orbicular, ~1 mm long; rough, bumpy texture, but generally much less so than other members of family
orbicular, ~1 mm long; pinched hilum (seed base); covered in angular-rounded tubercles (warty bumps); fewer tubercles rel...
rounded, 5 sectioned capsule, ~5 mm wide; indented top; style persistent at top of capsule
rounded, 5 sectioned capsule, up to 6 mm wide; indented top; style persistent from top of capsule
abaxial (bottom) side shown; ovate to narrowly triangular, 2-10 mm long, 1-3 mm wide; bottom of leaf much paler than top;...
adaxial (top) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed
elliptic, 0.3-0.5 mm long; finely pitted surface; embryo folded so that lengthwise dark brown line is visible
elliptic, 5-7 mm long; conspicuous micropyle opening (hole at seed base); smooth, shiny
subfossil specimen; note remnant of wings, persistent stigmas, characteristic size and shape (elliptic, 1.5-3 mm)
Abaxial (bottom) surface pictured on top, adaxial (top) surface below. Base of needle on righthand side of photograph. No...
Note blunt tip, base of needle on right hand side of photograph. Four-angled in cross section, 6-18 mm long.
3 lobed, rounded, sometimes dotted with resin.
abaxial (bottom) surface; rounded to obovate, 2-4 cm long, 1-3 cm wide, coarsely toothed margins, teeth may be blunt or s...
weakly 5 lobed, with center lobe being most prominent; may be dotted with resin
rounded trigonous, 2-2.5 mm long; weak reticulate texture; style base (top of seed) rounded with indent
rounded trigonous, 1.8-2.3 mm long; weak reticulate texture; conspicuos style base (top of seed) rounded with indent
