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 ...
elliptic, 0.3-0.5 mm long; finely pitted surface; embryo folded so that lengthwise dark brown line is visible
1-2.5 cm wide; 5-12 shallow, rough ridges; hollow central cavity 1/3-1/4 of total stem diameter; other smaller cavities ...
linear to narrowly oval, 2-5 cm long, 3-10 mm wide; sharp pointed with a small spine; leathery; margins may be rolled und...
compressed kidney shaped, 2-3 mm long; narrow line runs obliquely on each face from hilum (seed attachment scar)
elliptic, 5-7 mm long; conspicuous micropyle opening (hole at seed base); smooth, shiny
obovate to compressed triangular, 1-2 mm long; white mouth at seed attachment base; globules on inner face; globules and ...
biconvex, 2-3 mm long; wing 5-8 mm long
biconvex, 1.5-2 mm long; wing 2-5 mm long
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
obovate-compressed, 0.5-0.7 mm long; pointed style base (tip); body surrounded by wing-like ring of spongy tissue, except...
2-8 mm; smooth, glabrous
flattened-ovate, 1.5-2 mm long; marginal seam that is lighter in color than seed body; short beaked
subfossil specimen; note remnant of wings, persistent stigmas, characteristic size and shape (elliptic, 1.5-3 mm)
flattened oval, 4-5 mm long, 1-2 mm wide; lemma with conspicous bristles
ovate, minute, 0.5-0.8 mm; covered in white hairs; conspicuous white-light yellow base
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,...
abaxial side (bottom of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakl...
pit globose, 7-9 mm in diameter; low ridge along one side (visible on left side of top right pit in image); inner surface...
adaxial side (top of leaf) pictured; oblong-lanceolate, 2-4 cm long (mature trees) or 1-2 cm long (young trees); weakly r...
