Flora of North America species comparison

branches (highly brittle at base), red-brown, not glaucous, tomentose or velvety to glabrescent;

branchlets red-brown or yellow-brown, densely velvety, (buds caprea-type).

stipules absent, rudimentary, or foliaceous on early ones, foliaceous on late ones (apex acuminate);

petiole 1.5–8 mm, glabrous adaxially;

largest medial blade lorate, narrowly oblong, narrowly elliptic, narrowly oblanceolate, or linear, 30–133 × 5–20 mm, 3.4–8–15 times as long as wide, base cuneate or convex, margins flat, spinulose-serrulate or entire, apex acute, acuminate, or convex, abaxial surface glaucous or not, pilose, villous, or long-silky to glabrescent, hairs appressed or spreading, wavy, adaxial slightly glossy, villous to glabrescent;

proximal blade margins entire or serrulate;

juvenile blade reddish or yellowish green, densely villous abaxially.

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

petiole convex to flat, or shallowly grooved adaxially, 6–16 mm, velvety or tomentose adaxially;

largest medial blade elliptic or obovate, 53–102 × 29–54 mm, 1.3–2.8 times as long as wide, base cuneate or convex, margins slightly revolute, entire or sinuate, apex convex, rounded, or acute, abaxial surface glaucous (sometimes obscured by hairs), densely to sparsely velvety, tomentose, villous, or short-silky, hairs erect or spreading, wavy, adaxial dull, sparsely tomentose or short-silky;

proximal blade margins entire;

juvenile blade green, very densely velvety or long-silky abaxially, hairs white or gray.

abaxial nectary 0.3–0.9 mm, adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.4–1.2 mm, nectaries distinct;

filaments densely hairy on proximal 1/2;

anthers 0.55–0.7–0.9 mm.

adaxial nectary narrowly oblong to oblong, 0.5–1 mm;

filaments distinct or slightly connate, glabrous;

anthers purple turning yellow, ellipsoid, 0.6–0.7 mm.

adaxial nectary ovate, oblong, or flask-shaped, 0.4–1.1 mm, longer than stipe, nectaries distinct or connate and cup-shaped;

stipe 0–0.7 mm;

ovary obclavate or pyriform, glabrous, beak abruptly tapering to styles;

ovules 13–22 per ovary;

styles 0–0.14–0.5 mm;

stigmas slenderly cylindrical or 2 plump lobes, 0.2–0.5 mm.

adaxial nectary narrowly oblong to oblong, 0.4–0.9 mm, longer than stipe;

stipe 0–0.3 mm;

ovary obturbinate, short-silky or densely pubescent, beak gradually tapering to styles;

ovules 14–18 per ovary;

styles 0.6–1.2 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.32–0.4 mm.

4–5 mm.

4 mm.

staminate 18–48 × 5–13 mm, flowering branchlet 3–15 mm; pistillate moderately densely flowered, slender or stout, 22–58 × 4–9 mm, flowering branchlet 4–12 mm;

floral bract (sometimes brown), 1.3–2.8 mm, apex rounded (sometimes truncate), entire or erose, abaxially hairy mainly proximally, hairs wavy.

flowering before leaves emerge; staminate stout, 25–30 × 6–13 mm, flowering branchlet 0–5 mm; pistillate moderately densely flowered, slender to stout, 17–53 × 6–8 mm, flowering branchlet 1–3 mm;

floral bract brown, 1.2–2.2 mm, apex rounded, abaxially hairy, hairs straight.