ovate, 1-1.5 mm long; variable color; prominent hilum (attachment scar)
compressed kidney shaped, 2-3 mm long; narrow line runs obliquely on each face from hilum (seed attachment scar)
oblong-compressed; 3-8 mm long; dry, grayish outer coating and black underneath; white, oblong hilum bordered by black
subglobose, 1-1.2 mm; clear-yellow elaiosome (lipid rich deposit used to attract insect dispersal) attached to seed
abaxial (bottom) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed
adaxial (top) side of leaf shown; lanceolate, 3-8 cm long, 1-4 cm wide; margins coarsely, irregularly toothed
obovate to compressed triangular, 1-2 mm long; white mouth at seed attachment base; globules on inner face; globules and ...
linear, 1.5-2 cm long; 4 angled in cross-section; stiff, sharp tipped
biconvex, 2-3 mm long; wing 5-8 mm long
biconvex, 1.5-2 mm long; wing 2-5 mm long
flattened oval, 4-5 mm long, 1-2 mm wide; lemma with conspicous bristles
triangular, sides convex, 1-1.5 mm; smooth, shiny; embryo attached to one side (rather than to a corner as in Polygonum)
triangular, sides slightly convex, 1-2 mm; smooth, shiny; embryo attached to one side (rather than to a corner as in Poly...
flat, obovate, 3-5 mm; long beak 2-4 mm long; winged; wooly hairs
elliptic, 0.3-0.5 mm long; finely pitted surface; embryo folded so that lengthwise dark brown line is visible
ovate, minute, 0.5-0.8 mm; covered in white hairs; conspicuous white-light yellow base
elliptic, 5-7 mm long; conspicuous micropyle opening (hole at seed base); smooth, shiny
obovate-compressed, 0.5-0.7 mm long; pointed style base (tip); body surrounded by wing-like ring of spongy tissue, except...
flattened-ovate, 1.5-2 mm long; marginal seam that is lighter in color than seed body; short beaked
2-8 mm; smooth, glabrous
subfossil specimen; note remnant of wings, persistent stigmas, characteristic size and shape (elliptic, 1.5-3 mm)
adaxial side (top of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakly r...
abaxial side (bottom of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakl...
pit spheroid, 7-9 mm in diameter; low ridge along one side (visible on left side of top right pit in image); inner surfac...
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,...
