Flora of North America species comparison

erect or trailing;

branches yellow-brown or gray-brown, (sometimes weakly glaucous), glabrous;

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

erect;

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

branchlets yellow-brown, glabrous.

(marcescent);

stipules absent;

petiole 1.5–5 mm;

largest medial blade usually amphistomatous, narrowly elliptic or elliptic, 9–26 × 3.8–7.5 mm, 2.4–4.3 times as long as wide, base cuneate, margins flat, entire, ciliate, apex acute, acuminate, or convex, abaxial surface glabrous or pilose, hairs wavy, adaxial slightly glossy, glabrous or pilose;

proximal blade margins entire;

juvenile blade glabrous or sparsely villous 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 (0–)0.2–0.6 mm, adaxial nectary oblong or square, 0.4–1.2 mm, nectaries distinct;

filaments distinct or basally connate;

anthers ellipsoid, 0.3–0.6 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.

adaxial nectary oblong or square, 0.5–1.2 mm, longer than stipe;

stipe 0–0.6 m;

ovary pyriform, usually densely villous, beak abruptly tapering to or slightly bulged below styles;

ovules 6–10 per ovary;

styles 0.3–1 mm;

stigmas slenderly cylindrical, 0.28–0.39–0.56 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.

3.5–5 mm.

3.6–6 mm.

staminate (20–50 flowers), 12.5–26.5 × 5.5–9 mm, flowering branchlet 1–11 mm; pistillate moderately densely to loosely flowered, (15–35(–43) flowers), stout or subglobose, 10–23(–30 in fruit) × 5–8 mm, flowering branchlet 2–9 mm;

floral bract brown, 1.6–2.6 mm, apex rounded, entire, abaxially sparsely hairy or ciliate, hairs wavy or straight.

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.