Flora of North America species comparison

stipules absent, rudimentary, or foliaceous on early ones, foliaceous on late ones, (1–16 mm), apex acute or acuminate;

petiole convex to flat adaxially, 2–13 mm, velvety or villous adaxially;

largest medial blade usually oblanceolate, sometimes narrowly elliptic, elliptic or obovate, 29–100 × 9–37 mm, 1.7–3.9 times as long as wide, base cuneate or convex, margins strongly to slightly revolute or flat, entire, remotely serrate, crenate, or sinuate, (glands submarginal or epilaminal), apex acuminate, convex, or rounded, abaxial surface glaucous, sparsely to densely short- to long-silky or woolly, hairs (white, sometimes also ferruginous), wavy or straight, adaxial slightly glossy, pilose or moderately densely short-silky, midrib velutinous or villous, (hairs white, sometimes also ferruginous);

proximal blade margins entire, serrulate, or crenulate;

juvenile blade reddish or yellowish green, sparsely to densely villous, short- or long-silky abaxially, hairs white, sometimes also ferruginous.

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

petiole convex to flat adaxially, 7–25 mm, tomentose to glabrescent adaxially;

largest medial blade narrowly elliptic, broadly elliptic, oblanceolate, obovate, or broadly oblong, 50–130 × 25–80 mm, 2–3 times as long as wide, base cuneate or convex, margins slightly revolute, entire, crenate, or sinuate, (glands submarginal or epilaminal), apex acuminate or convex, abaxial surface glaucous, sparsely tomentose or pubescent, hairs erect, wavy, adaxial dull or slightly glossy, sparsely pubescent;

proximal blade margins entire;

juvenile blade green, densely tomentose abaxially, hairs white, sometimes also ferruginous.

adaxial nectary oblong or square, 0.4–0.9 mm;

filaments distinct, glabrous or hairy on proximal 1/2;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.7–1.2 mm.

adaxial nectary oblong or square, 0.4–0.7 mm;

filaments distinct, glabrous;

anthers yellow, ellipsoid or shortly cylindrical, 0.7–1.1 mm.

adaxial nectary oblong or square, 0.2–0.8 mm, shorter than stipe;

stipe 0.8–2.3 mm;

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

ovules 10–18 per ovary;

styles 0.2–0.6 mm;

stigmas slenderly cylindrical, 0.4–0.82–1.04 mm.

adaxial nectary oblong, narrowly oblong, or square, 0.4–0.9 mm, shorter than stipe;

stipe 2–2.5 mm;

ovary pyriform, densely short-silky, beak gradually tapering to styles;

ovules 12–14 per ovary;

styles 0.3–0.6 mm;

stigmas slenderly cylindrical, 0.4–0.55–0.6 mm.

4.5–11 mm.

6–12 mm.

flowering before leaves emerge; staminate stout or subglobose, 18–40.5 × 8–22 mm, flowering branchlet 0–4 mm; pistillate very densely flowered, slender or stout, 18–60(–90 in fruit) × 10–22 mm, flowering branchlet 0–8 mm;

floral bract brown, black, or bicolor, 1.5–4.5 mm, apex rounded or acute, abaxially hairy, hairs straight.

flowering before leaves emerge; staminate subglobose or globose, 16–39 × 12–30 mm, flowering branchlet 0–3 mm; pistillate densely flowered, stout or subglobose, 27–64 × 10–25 mm, flowering branchlet 0–7 mm;

floral bract dark brown or black, 2–4 mm, apex acute or rounded, abaxially hairy, hairs (white), straight.

= 76.

= 38.