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.

trailing or erect;

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

branchlets yellow-brown or red-brown, glabrous or pilose.

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 1.5–7 mm (sometimes glandular distally or throughout);

largest medial blade hypostomatous, (veins impressed-reticulate, 2 pairs of secondary veins arising at or close to base, arcing toward apex,), elliptic to broadly elliptic, 6–22 × 4–15 mm, 1.1–2.8 times as long as wide, base convex, rounded, subcordate, or cuneate, margins slightly revolute, entire (glandular-dotted), apex convex, rounded, or retuse, abaxial surface glabrous or with long-silky hairs, adaxial slightly glossy, glabrous;

proximal blade margins entire;

juvenile blade glabrous.

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 0.5–1.3 mm, adaxial nectary narrowly oblong, oblong, or square, 0.5–1.2 mm, nectaries connate and cup-shaped;

filaments distinct, glabrous or hairy basally;

anthers ellipsoid or 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.

abaxial nectary (0–)0.2–0.5 mm, adaxial nectary oblong, 0.2–1 mm, longer than stipe, nectaries distinct or connate and shallowly cup-shaped;

stipe 0–0.8 mm;

ovary obturbinate, short-silky, hairs flattened, beak abruptly tapering to styles;

ovules 8–10 per ovary;

styles distinct to connate 1/2 their lengths, 0.2–0.4 mm;

stigmas flat, abaxially non-papillate with rounded tip, 0.2–0.26–0.36 mm.

3–5 mm.

3–4 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 7–19 × 2.5–6 mm, flowering branchlet 0.5–17 mm; pistillate densely to loosely flowered (4–17 flowers), stout, subglobose or globose, 7–21 × 2–9 mm, flowering branchlet 1–10 mm;

floral bract tawny or light rose, 0.8–1.8 mm, apex rounded, entire, abaxially glabrous.

= 38.

= 38.