Flora of North America species comparison

erect, decumbent or trailing;

branches gray-brown, glabrous;

branchlets yellow-brown or red-yellow, glabrous or puberulent (hairs straight, minute, inner membranaceous bud-scale layer free, not separating from outer layer).

stipules (early deciduous), foliaceous or rudimentary on early ones, foliaceous on late ones, apex acute, convex, or rounded;

petiole convex to flat, or shallowly grooved adaxially, 7–20 mm, glabrous or sparsely velvety adaxially;

largest medial blade narrowly oblong, oblong, elliptic, or broadly elliptic, 30–103 × 19–40 mm, 1.5–3.4 times as long as wide, base cordate, subcordate, rounded or convex, margins flat or slightly revolute, serrulate, irregularly serrate, crenate, or sinuate, apex acute or acuminate, abaxial surface glaucous, glabrous, adaxial slightly or highly glossy, glabrous;

proximal blade margins serrulate or entire;

juvenile blade translucent, glabrous or pilose abaxially, hairs white.

stipules absent or rudimentary;

petiole (deeply to shallowly grooved adaxially), 3–8 mm, (glabrous or puberulent);

largest medial blade narrowly oblong, oblong, narrowly to broadly elliptic, narrowly oblanceolate or oblanceolate, 19–53(–69) × 5–20 mm, 1.8–4.9 times as long as wide, base convex or rounded, margins flat or slightly revolute, entire, apex acute, convex, or rounded, abaxial surface glabrous, adaxial dull, glaucous, glabrous (rarely very sparsely short-silky, hairs usually white, sometimes also ferruginous);

proximal blade margins entire;

juvenile blade (reddish or yellowish green), glabrous, puberulent, or sparsely pubescent abaxially, (hairs usually white, sometimes also ferruginous).

adaxial nectary square or ovate, 0.3–0.5 mm;

filaments distinct, glabrous or sparsely hairy basally;

anthers yellow, (ellipsoid or shortly cylindrical), 0.5–0.8 mm.

abaxial nectary absent, adaxial nectary oblong or narrowly oblong, 0.5–1.1 mm;

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

anthers (yellow), ellipsoid, 0.4–0.6 mm.

adaxial nectary narrowly ovate or square, 0.3–0.7 mm, shorter than stipe;

stipe 1.8–3.5 mm;

ovary obclavate, glabrous, beak slightly bulged below styles;

ovules 10–19 per ovary;

styles 0.4–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.23–0.32 mm.

abaxial nectary absent, adaxial nectary oblong, 0.2–1.4 mm, shorter than stipe;

stipe 2.1–3.2 mm;

ovary obclavate, often glaucous, glabrous, beak abruptly tapering to styles;

ovules 4–6 per ovary;

styles connate or distinct 1/2 their lengths, 0.1–0.2 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.25–0.36 mm.

7–8 mm.

4–8 mm.

staminate flowering just before leaves emerge, pistillate flowering as leaves emerge; staminate stout or slender, 18.5–63 × 7–15 mm, flowering branchlet 1–5 mm; pistillate loosely flowered, stout or slender, 25–85 × 8–20 mm, flowering branchlet 2–22 mm;

floral bract tawny, 1–2.4 mm, apex acute or convex, abaxially sparsely to moderately densely hairy, hairs straight or wavy.

staminate 11–21 × 4–8 mm, flowering branchlet 3–12 mm; pistillate loosely flowered, stout or subglobose, 14–37 × 5–14 mm, flowering branchlet 7–25 mm;

floral bract tawny or light rose, 0.8–1.6 mm, apex rounded, entire, abaxially very sparsely hairy distally, hairs straight or wavy.

= 38.

= 38, 57, 76.