Flora of North America species comparison

erect;

branches red-brown, (often glaucous, dull), glabrous;

branchlets brownish, glabrous.

stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute or rounded;

petiole convex to flat adaxially, 4–15 mm, tomentose adaxially;

largest medial blade elliptic, broadly elliptic, oblanceolate, or obovate, 65–105 × 22–52 mm, 2–3 times as long as wide, base convex or cuneate, margins slightly revolute, entire, crenate, or sinuate, (glands submarginal), apex acuminate or convex, abaxial surface glaucous, tomentose, hairs erect or spreading, curly, adaxial dull or slightly glossy, pubescent or tomentose;

proximal blade margins entire;

juvenile blade yellowish green, sparsely to densely tomentose abaxially, hairs white.

stipules absent or rudimentary;

petiole (deeply grooved), 1.3–10 mm, (glabrous adaxially);

largest medial blade (deciduous in autumn, 2 pairs of secondary veins arising at or close to base, arcing toward apex), elliptic, broadly elliptic, obovate, or subcircular, 5–32 × 7–18 mm, 1.1–2.8 times as long as wide, base convex, rounded, or cuneate, margins slightly revolute or flat, entire, ciliate, apex usually rounded or convex, sometimes retuse, abaxial surface (rarely glaucous), glabrous or pilose, adaxial slightly glossy, glabrous;

proximal blade margins entire;

juvenile blade glabrous.

adaxial nectary oblong or ovate, 0.5–1 mm;

filaments distinct, glabrous or hairy basally;

anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.7–1 mm.

abaxial nectary 0.3–0.7 mm, adaxial nectary oblong, narrowly oblong, square, or ovate, 0.5–1.4 mm, nectaries distinct;

filaments usually distinct, sometimes connate proximally, glabrous;

anthers ellipsoid or ovoid, 0.4–0.6 mm.

adaxial nectary oblong or square, 0.4–1 mm, shorter than stipe;

stipe 1.2–2.7 mm;

ovary pyriform, long-silky, beak slightly bulged below styles;

ovules 12 per ovary;

styles 0.2–0.5 mm;

stigmas slenderly or broadly cylindrical, 0.3–0.6 mm.

abaxial nectaries absent, adaxial nectary narrowly oblong, oblong, or ovate, 0.8–1.8 mm, longer than stipe;

stipe 0.2–0.7 mm;

ovary obclavate or pyriform, densely villous to pilose, hairs flattened, beak gradually tapering to or slightly bulged below styles;

ovules 12–17 per ovary;

styles connate to distinct 1/2 their lengths, 0.7–1.2 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly to broadly cylindrical, 0.3–0.6(–0.7) mm.

5–5.6 mm.

4.8–8.25 mm.

flowering before leaves emerge; staminate stout or subglobose, 26–39 × 12–26 mm, flowering branchlet 0–5 mm; pistillate densely flowered, stout or subglobose, 27–54(–75 in fruit) × 4–15 mm, flowering branchlet 1–5(–10) mm;

floral bract dark brown, black, or bicolor, 2–3 mm, apex acute or convex, abaxially hairy, hairs straight.

sometimes from subterminal buds; staminate 9–34 × 6–12 mm, flowering branchlet 1.5–14 mm; pistillate densely or moderately flowered (more than 15 flowers), stout to globose, 10–50 × 7–13 mm, flowering branchlet 1–12 mm;

floral bract brown, black, or bicolor, 1.5–2.5 mm, apex rounded or convex, entire, abaxially sparsely hairy, hairs straight or wavy, (exceeding bract by 0.6–1.12–1.8 mm).

= 76.

= 76, 114.