Flora of North America species comparison

prostrate, short-trailing;

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

branchlets yellow-green or yellow-brown, glabrous or puberulent.

branches (highly to ± brittle at base), yellow-brown or red-brown, usually strongly glaucous, (slightly glossy), glabrous or glabrescent;

branchlets red-brown or mottled yellow-brown, (strongly to not glaucous), glabrous, puberulent, pilose, or velvety, (buds caprea-type or intermediate).

stipules (sometimes marcescent) absent, rudimentary, or foliaceous on early ones, foliaceous on late ones;

petiole (shallowly to deeply grooved adaxially), 2–6.5 mm;

largest medial blade (marcescent), amphistomatous or hypostomatous, ovate, broadly obovate, oblanceolate, or elliptic, 4–23 × 3.5–10 mm, 1.7–3.6 times as long as wide, base convex or cuneate, margins flat, serrulate or crenulate, apex convex, acuminate, acute, or retuse, abaxial surface glaucous, usually glabrous (rarely few hairs), adaxial slightly or highly glossy, usually glabrous (rarely a few hairs);

proximal blade margins entire or serrate;

juvenile blade glabrous, pilose, or puberulent abaxially.

stipules usually rudimentary or absent, or foliaceous, then small and ovate or slender, apex acute;

petiole convex to flat, or shallowly grooved adaxially, 2–12 mm, villous or velvety adaxially;

largest medial blade lorate, narrowly elliptic, elliptic, or oblanceolate, 40–85 × 9–26 mm, 3–6.2 times as long as wide, base cuneate or convex, margins slightly revolute, entire, or shallowly crenate to sinuate, apex acute, acuminate, or convex, abaxial surface glaucous (obscured by hairs), densely short- to long-silky, hairs (white, sometimes also ferruginous), straight or wavy, adaxial slightly glossy or dull, sparsely short-silky to glabrescent, (hairs white, sometimes also ferruginous);

proximal blade margins entire;

juvenile blade green, very densely short-silky abaxially (sparsely so adaxially), hairs white, sometimes also ferruginous.

abaxial nectary absent, adaxial nectary narrowly oblong or oblong, 0.4–0.9 mm;

filaments distinct, glabrous;

stamens usually 1, rarely 2;

anthers ellipsoid or shortly cylindrical, 0.4–0.7 mm.

adaxial nectary oblong, 0.3–0.6 mm;

filaments distinct, glabrous;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.4–0.6 mm.

abaxial nectary absent, adaxial nectary narrowly oblong or oblong, 0.5–0.8 mm, shorter to longer than stipe;

stipe 0.3–1.6 mm;

ovary ovoid or pyriform, glabrous, beak gradually tapering to styles;

ovules 4–9 per ovary;

styles 0.4–1 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, 0.1–0.23–0.4 mm.

adaxial nectary narrowly oblong, oblong, or ovate, 0.4–1 mm, shorter to longer than stipe;

stipe 0.3–2 mm;

ovary pyriform, short-silky, beak gradually tapering to styles;

ovules 6–17 per ovary;

styles 0.5–1.5 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly to broadly cylindrical, 0.32–0.43–1 mm.

3–5 mm.

2.5–6 mm.

staminate 9–19 × 5–8 mm, flowering branchlet 0.5–9 mm; pistillate densely flowered, slender to subglobose, 11–47(–55 in fruit) × 6–10 mm, flowering branchlet 2–10 mm;

floral bract brown, black, tawny, light rose, or bicolor, 1.1–1.8 mm, apex rounded or acute, entire, abaxially sparsely hairy, hairs straight or wavy.

flowering before leaves emerge; staminate stout, 19–40 × 8–20 mm, flowering branchlet 0 mm; pistillate densely flowered, slender or stout, 22–87(–105 in fruit) × 8–18 mm, flowering branchlet 0–3(–6) mm;

floral bract brown or black, 1.2–2.8 mm, apex acute or rounded, abaxially hairy, hairs straight.

= 38.

= 38, 57, 76.