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.

(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 rudimentary or foliaceous on early ones, foliaceous on late ones, (0.6–8 mm), apex acute or obtuse;

petiole shallowly to deeply grooved adaxially, 2.5–8 mm, glabrous or villous adaxially;

largest medial blade (sometimes amphistomatous), narrowly to broadly elliptic, oblong to oblanceolate or obovate, 32–109 × 10–47 mm, 1.8–4.8 times as long as wide, base convex, cuneate, or subcordate, sometimes cordate, margins flat, entire, crenate, or serrulate, apex acute, convex, or acuminate, abaxial surface not glaucous, glabrous or pilose, hairs (white, sometimes also ferruginous), wavy, adaxial slightly glossy, glabrous, pilose, pubescent, moderately densely short-silky, or velvety, midrib remaining pilose or short-hairy, (hairs sometimes also ferruginous, straight and geniculate);

proximal blade margins serrulate or entire;

juvenile blade sometimes reddish or yellowish green, abaxially glabrous, or midrib sparsely pubescent, or densely villous or short-silky, hairs white, sometimes also ferruginous.

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.

adaxial nectary oblong square, 0.2–0.4–0.6 mm;

filaments distinct, glabrous;

anthers purple turning yellow, 0.4–0.7 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 square or oblong, 0.2–0.4 mm, shorter than stipe;

stipe 0.8–1.4 mm;

ovary pyriform, glabrous, beak slightly bulged below styles;

ovules 11–18 per ovary;

styles 0.4–1.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.16–0.24–0.32 mm.

3.5–5 mm.

4.4–6.4 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.

flowering as leaves emerge; staminate stout, 16.5–35.5 × 7–15 mm, flowering branchlet 0.5–12 mm; pistillate moderately or densely flowered, slender or stout, 10.5–68 × 5–20 mm, flowering branchlet 0.5–10 mm;

floral bract brown, black, tawny, or bicolor, 0.6–1.1 mm, apex retuse, abaxially hairy, hairs long-wavy or curly.

= 76.