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.

erect;

branches red-brown, (weakly glaucous), glabrous;

branchlets yellow-brown, glabrous.

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 absent or rudimentary;

petiole (deeply to shallowly grooved adaxially), 1–3.5 mm;

largest medial blade elliptic, oblanceolate, or obovate, 14–33 × 7–12 mm, 1.9–3.4 times as long as wide, base cuneate or convex, margins flat or slightly revolute, entire, ciliate, apex acute, convex, or rounded, abaxial surface glabrous, adaxial slightly glossy, glabrous;

proximal blade margins entire;

juvenile blade (sometimes reddish), glabrous, ciliate.

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.

abaxial nectary 0.3–0.4 mm, adaxial nectary oblong, 0.5–0.8 mm, nectaries distinct;

filaments distinct, glabrous;

anthers ellipsoid, 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, 0.9–1.6 mm, longer than stipe, nectaries distinct or connate and shallowly cup-shaped;

stipe 0–0.4 mm;

ovary pyriform, glabrous, beak abruptly tapering to or slightly bulged below styles;

ovules 8–10 per ovary;

styles connate to distinct 1/2 their lengths, 0.5–1.3 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, 0.3–0.6 mm.

3–5 mm.

3.6–6 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.

staminate 6.5 × 5–8 mm, flowering branchlet 1–3 mm; pistillate densely flowered, stout or subglobose, 7–12 × 3–6 mm, flowering branchlet 1.8–12 mm;

floral bract tawny, brown, or greenish, 1–2.6 mm, apex broadly rounded to retuse, entire, abaxially glabrous.

= 38.

= 38.