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...
winged, 1.5-3 mm long, nutlet 0.5-1 mm wide, wings slightly wider than nutlet; wings may be damaged/missing in subfossil ...
obovoid, flattened; narrowly winged on margins, 2-3 mm long
oblong, tapering to base, 3.5-4.5 mm long, indistinctly 5 sided; speckled with small brown-red dots; white base; coarse, ...
2-3 cm halbard shaped with basal lobes; coarsely toothed, especially so along one side of center lobe
compressed elliptic, biconvex, less than 0.5 mm long; glossy
compressed ovoid to ellipsoid, ~7 x 5 x 3 mm; several grooves/stripes on each face
angular-ovate, flat; ~0.5 mm long; surface with distinct tubercles (wart like projections); must compare to other tubercl...
wedge shaped, like narrow sector of sphere, 1-2 mm long; one side nearly straight
nut 10-16 mm long, 9-15 mm wide; cup shallow, saucer shaped, covering 1/5 to 1/4 of nut
buds glabrous
opposite bud scars, glabrous (shiny); lenticels (white marks)
lens shaped in cross section, circular in outline; 1-3 mm wide; dull, dark brown to black; outline of ring-shaped embryo ...
3 lobed, lobes divergent, forming cross-like or fleur-de-lis shape. 6-12 mm.
4-5 mm long, 3-4 time as long as wide, faintly veined or veinless on both sides; tapered beak with finely serrate margins...
rounded trigonous, obovate, inconspicuously veined, 4-5.4 mm; beak 2 mm long, inconspicuously serrate
subglobose, 3-4.5 mm long, 1.5-2 times as long as wide; short, slender beak
oblong, tapering slightly to base; 2-2.5 mm long; 4 sided
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, fo...
crescent-wedge shaped , 4-5 mm long, 3-4 mm wide; slightly compressed laterally, shallow ribbed
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, fo...
compressed, oval to elliptic, 0.5-1 mm long; glossy; conspicuous seed coat lighter in color than body
nut ovoid, 6-13 mm long; cup bowl shaped, covering 1/2 of nut; large, pubescent scales; marginal scales projecting, formi...
oblong rounded-triangular, 1-1.5 mm long; surface ridged, with bristles clustered at top and along margins
