Flora of North America species comparison

prostrate, long-trailing;

branches yellow-brown, red-brown, or green-brown, glabrous;

branchlets yellow-green or yellow-brown to red-brown, (sometimes weakly glaucous), glabrous, (inner membranaceous bud-scale layer free, not separating from outer layer).

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

petiole 3–7.8–15 mm;

largest medial blade hypostomatous or hemiamphistomatous, elliptic, obovate, broadly elliptic, broadly obovate, subcircular, or oblanceolate, 15–31–60 × 6.5–16–35 mm, 1.2–3–4.3 times as long as wide, base cuneate, convex, or rounded, margins slightly revolute, inconspicuously crenulate or entire, apex usually acute or convex, sometimes rounded, abaxial surface glaucous, glabrous, adaxial slightly or highly glossy, glabrous;

proximal blade margins entire or serrulate;

juvenile blade glabrous.

stipules absent, rudimentary, or foliaceous on early ones, foliaceous on late ones, (2.5–9 mm), apex rounded or convex;

petiole convex to flat, or shallowly grooved adaxially, 5–11 mm, tomentose or velvety adaxially;

largest medial blade lorate, oblanceolate, or elliptic, 55–96 × 15–34 mm, 2–3.7 times as long as wide, base convex, margins slightly revolute, entire, sinuate or serrulate, apex acuminate to acute, abaxial surface glaucous, sparsely pubescent to moderately densely tomentose or glabrous, hairs (white, sometimes also ferruginous), straight or curved, adaxial slightly glossy, sparsely tomentose to glabrescent;

proximal blade margins entire or serrulate;

juvenile blade reddish, very densely tomentose or puberulent to glabrescent abaxially, hairs white, sometimes also ferruginous.

abaxial nectary absent, adaxial nectary oblong, square, narrowly oblong, or ovate, 0.4–1 mm;

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

anthers ellipsoid or long-cylindrical, 0.5–0.7 mm.

adaxial nectary narrowly oblong, oblong, or ovate, 0.3–0.8 mm;

filaments connate less to more than 1/2 their lengths;

anthers purple turning yellow, ellipsoid, shortly cylindrical, or globose, 0.36–0.44 mm.

abaxial nectary absent, adaxial nectary oblong or narrowly oblong, 0.5–0.9 mm, shorter than stipe;

stipe 0.8–1.4 mm;

ovary pyriform or obclavate, pubescent or short-silky, (refractive), hairs (white, grayish, or ferruginous), crinkled, often refractive, ribbonlike, beak gradually tapering to styles;

ovules 8–16 per ovary;

styles connate or distinct 1/2 their lengths, 0.6–1.4 mm;

stigmas slenderly or broadly cylindrical, 0.24–0.47–0.72 mm.

adaxial nectary oblong, or narrowly oblong to flask-shaped, 0.2–0.6 mm;

stipe 1–1.7(–2.4) mm;

ovary pyriform, beak sometimes slightly bulged below styles;

ovules 12 per ovary;

styles 0.1–0.6 mm;

stigmas flat, abaxially non-papillate with rounded or pointed tip, 0.1–0.3 mm.

5–9 mm.

2.4–3.6 mm.

staminate 19–54 × 7–16 mm, flowering branchlet 4–20 mm; pistillate densely to moderately densely flowered, slender to subglobose, 30–79(–130 in fruit) × 10–20 mm, flowering branchlet 8–57 mm;

floral bract brown, black, or bicolor, 0.8–2.4 mm, apex rounded or acute, entire, abaxially densely hairy, hairs straight.

flowering as or just before leaves emerge; staminate stout, 17–30 × 7–9 mm, flowering branchlet 1.5–5 mm; pistillate very densely flowered, stout to slender, 17–42 × 6–11 mm, flowering branchlet 1.5–3 mm;

floral bract brown or bicolor, 0.8–1.6 mm, apex rounded to truncate, abaxially hairy throughout or proximally, hairs wavy or straight.

= 76.