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.

branches (highly brittle at base), yellow-brown or red-brown, weakly glaucous or not, (dull or slightly glossy), velvety or short-silky to glabrescent;

branchlets gray-brown or red-brown, sparsely or moderately densely short-silky or velvety, (buds caprea-type or intermediate).

(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 usually rudimentary, sometimes foliaceous on early ones, foliaceous on late ones, apex acute;

petiole shallowly grooved, or convex to flat adaxially, 3–12 mm, short-silky or velvety adaxially;

largest medial blade lorate, narrowly oblanceolate, or oblanceolate, 43–74–103 × 8–25 mm, 2.9–4.8–7.7 times as long as wide, base convex or cuneate, margins slightly revolute to flat, entire, apex acuminate, convex, or acute, abaxial surface glaucous (sometimes obscured by hairs), densely short-silky, hairs straight, adaxial dull (sometimes thinly glaucous) to slightly glossy, sparsely short- or long-silky;

proximal blade margins entire;

juvenile blade yellowish green or reddish, densely long-silky abaxially, hairs white.

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 narrowly oblong to oblong, 0.4–0.8 mm;

stamens 1 or 2;

filaments distinct or connate less than 1/2 their lengths, hairy on proximal 1/2;

anthers purple turning yellow, ellipsoid or shortly cylindrical, 0.6–0.8 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 oblong to narrowly oblong or flask-shaped, 0.3–0.6 mm, shorter than or equal to stipe;

stipe 0.4–1.2 mm;

ovary pyriform, densely long-silky, beak gradually tapering to styles;

ovules 13–18 per ovary;

styles 0.4–0.6 mm;

stigmas flat, abaxially non-papillate with rounded to pointed tip, 0.2–0.3 mm.

3.5–5 mm.

3–5 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 or subglobose, 16–16.5 × 11–13 mm, flowering branchlet 2.5–3 mm; pistillate moderately densely flowered, slender to stout, 33–55 × 10–11 mm, flowering branchlet 1.5–7 mm;

floral bract brown or tawny, 0.8–2 mm, apex rounded or acute, abaxially hairy, hairs straight.