Flora of North America species comparison

branches red-brown, strongly glaucous (losing glaucescence in age but remaining so at nodes), glabrescent;

branchlets yellow-brown, (not glaucous, except in age), usually glabrescent, sometimes sparsely or moderately densely tomentose.

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 (often adnate to petioles), usually rudimentary on early ones, late ones lanceolate to ovate, apex acuminate or acute, often adnate to petiole;

petiole shallowly grooved, or convex to flat adaxially, 5–18 mm, tomentose to glabrescent adaxially;

largest medial blade oblong, lorate, narrowly elliptic, or elliptic, 50–96(–120) × 1–35(–40) mm, base cuneate to concave, margins slightly revolute, serrate to crenate, apex acuminate, abaxial surface glaucous, glabrescent or midrib sparsely tomentose, hairs (white, sometimes also ferruginous), spreading, straight, long or short, adaxial slightly glossy, (midrib sparsely tomentose or throughout);

proximal blade margins entire, closely gland-dotted;

juvenile leaves green, sparsely to moderately densely long-silky abaxially, hairs white, sometimes some 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 narrowly oblong to flask-shaped, 0.5–1 mm;

filaments distinct or connate basally;

anthers purple turning yellow, short- to long-cylindrical or ellipsoid, 0.5–0.7 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 to square, 0.4–0.9 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 4–6 per ovary;

styles 0.6–1.5 mm.

4.5–11 mm.

3.2–4.4 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 or just before leaves emerge; staminate stout, 30–47 × 9–20 mm, flowering branchlet 0–1.2 mm; pistillate densely flowered, stout, 20–50 mm, flowering branchlet ca. 1.5 mm;

floral bract dark brown or bicolor, 2.8–3 mm, apex acute to convex, moderately densely hairy throughout, hairs straight.

= 76.

= 38.