Flora of North America species comparison

branches (highly brittle at base), yellow-brown or red-brown, weakly glaucous or not, (dull or slightly glossy), velvety or short-silky to glabrescent;

branchlets gray-brown or red-brown, sparsely or moderately densely short-silky or velvety, (buds caprea-type or intermediate).

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

petiole shallowly grooved, or convex to flat adaxially, 5–8 mm, puberulent adaxially;

largest medial blade narrowly elliptic or elliptic, (20–)30–65(–75) × (8–)10–30(–35) mm, 1.8–3.7 times as long as wide, base convex, rounded, or cuneate, margins slightly revolute or flat, entire or shallowly serrulate, apex acute, acuminate, or convex, abaxial surface glaucous, glabrous or glabrescent, adaxial slightly glossy or dull, glabrous or pilose, midrib sparsely pubescent, hairs short, white, and ferruginous;

proximal blade margins entire or serrulate;

juvenile blade green, glabrous, or midrib sparsely villous abaxially, hairs usually white and ferruginous.

stipules usually rudimentary, sometimes foliaceous on early ones, foliaceous on late ones, apex acute;

petiole shallowly grooved, or convex to flat adaxially, 3–12 mm, short-silky or velvety adaxially;

largest medial blade lorate, narrowly oblanceolate, or oblanceolate, 43–74–103 × 8–25 mm, 2.9–4.8–7.7 times as long as wide, base convex or cuneate, margins slightly revolute to flat, entire, apex acuminate, convex, or acute, abaxial surface glaucous (sometimes obscured by hairs), densely short-silky, hairs straight, adaxial dull (sometimes thinly glaucous) to slightly glossy, sparsely short- or long-silky;

proximal blade margins entire;

juvenile blade yellowish green or reddish, densely long-silky abaxially, hairs white.

adaxial nectary oblong, square, or ovate, 0.2–0.9 mm;

filaments distinct, glabrous;

anthers yellow, 0.3–0.6 mm.

adaxial nectary narrowly oblong to oblong, 0.4–0.8 mm;

stamens 1 or 2;

filaments distinct or connate less than 1/2 their lengths, hairy on proximal 1/2;

anthers purple turning yellow, ellipsoid or shortly cylindrical, 0.6–0.8 mm.

adaxial nectary oblong or ovate, 0.4–0.8 mm, shorter than stipe;

stipe 0.5–1.2 mm;

ovary pyriform, glabrous, beak gradually tapering to styles;

ovules 12–19 per ovary;

styles 0.3–1.2 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.3–0.56 mm.

adaxial nectary oblong to narrowly oblong or flask-shaped, 0.3–0.6 mm, shorter than or equal to stipe;

stipe 0.4–1.2 mm;

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

ovules 13–18 per ovary;

styles 0.4–0.6 mm;

stigmas flat, abaxially non-papillate with rounded to pointed tip, 0.2–0.3 mm.

3–7 mm.

3–5 mm.

flowering as leaves emerge; staminate stout, 11–25 × 6–11 mm, flowering branchlet 1–5 mm; pistillate densely or loosely flowered, stout, 14–38.5 × 8–14 mm, flowering branchlet 1.5–14 mm;

floral bract brown, black, or bicolor, 0.7–2 mm, apex rounded to convex, abaxially hairy, hairs wavy.

flowering as leaves emerge; staminate stout or subglobose, 16–16.5 × 11–13 mm, flowering branchlet 2.5–3 mm; pistillate moderately densely flowered, slender to stout, 33–55 × 10–11 mm, flowering branchlet 1.5–7 mm;

floral bract brown or tawny, 0.8–2 mm, apex rounded or acute, abaxially hairy, hairs straight.