Flora of North America species comparison

erect or semi-prostrate;

branches gray-brown or red-brown, glabrous or woolly to glabrescent;

branchlets reddish, densely woolly (hairs spreading).

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 (shallowly grooved adaxially), 0–3 mm;

largest medial blade narrowly oblong, narrowly elliptic, elliptic, oblanceolate, or obovate, 25–87 × 10–30 mm, 2–3.9 times as long as wide, base cuneate or convex, margins flat, entire or serrulate, apex rounded to convex, abaxial surface glabrous, adaxial dull, glabrous;

proximal blade margins entire or serrulate;

juvenile blade glabrous.

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 0.4–0.8 mm, adaxial nectary narrowly oblong, oblong, or ovate, 0.6–1 mm, nectaries distinct, or connate and shallowly cup-shaped;

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

anthers long-cylindrical, 0.6–0.8 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.

adaxial nectary oblong, 0.8–1.3 mm, equal to or longer than stipe;

stipe 0–0.6 mm;

ovary obclavate or ovoid, beak abruptly tapering to styles;

ovules 16–23 per ovary;

styles distinct, 0.3–0.4 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly cylindrical, 0.32–0.47–0.6 mm.

7–8 mm.

3.6–10 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.

(sometimes branched); staminate 12–27 × 6–10 mm, flowering branchlet 3–8 mm; pistillate densely flowered, stout or subglobose, 20–34 × 6–13 mm, flowering branchlet 5–19 mm;

floral bract tawny or greenish, translucent, 2–3.6 mm, apex rounded or truncate, erose, sinuate, irregularly toothed, or entire, abaxially glabrous.

= 38.

= 38.