Flora of North America species comparison

trailing;

branches and branchlets yellow-brown or red-brown, glabrous.

branches yellow-brown or yellow-gray, not or weakly glaucous, (with sparkling wax crystals, dull or slightly glossy), pilose or villous;

branchlets gray-brown or red-brown, pubescent, villous, or velvety.

stipules absent or rudimentary;

petiole 3–46 mm, (sometimes glandular distally);

largest medial blade amphistomatous or hemiamphistomatous, (2 pairs of secondary veins arising at or close to base, arcing toward apex), oblong, broadly oblong, broadly elliptic, subcircular, or circular, (8–)12–66 × 8–50 mm, 1–1.5 times as long as wide, base convex, rounded, subcordate, or cordate, margins slightly revolute, entire or crenulate (glandular-dotted), apex rounded, convex, or retuse, abaxial surface sparsely long-silky to glabrescent, adaxial (venation deeply impressed), slightly or highly glossy, glabrous or pilose;

proximal blade margins entire;

juvenile blade glabrous.

stipules foliaceous, apex acute or convex;

petiole shallowly grooved adaxially, 4–13 mm, villous or pubescent adaxially;

largest medial blade (amphistomatous), narrowly oblong, narrowly elliptic, elliptic, oblanceolate, or lanceolate, 26–47 × 7.5–15 mm, 2.8–4.1 times as long as wide, base convex, rounded, or subcordate, margins slightly revolute or flat, serrate or serrulate, apex acuminate to acute, abaxial surface glaucous, glabrous, pilose, villous, or long-silky, hairs straight or wavy, adaxial dull, sparsely or moderately densely pilose or long-silky, especially on midrib;

proximal blade margins entire or serrulate;

juvenile blade reddish or yellowish green, sparsely to moderately densely long-silky or pubescent abaxially, hairs white.

abaxial nectary 0.5–0.9 mm, adaxial nectary oblong or ovate, 0.5–1 mm, nectaries connate and cup-shaped;

filaments distinct, hairy on proximal 1/2 or throughout;

anthers ellipsoid or globose, 0.3–0.4 mm.

adaxial nectary narrowly oblong or ovate, 0.7–1.1 mm;

filaments distinct or connate, hairy basally;

anthers yellow, 0.6–0.8 mm.

abaxial nectary (0–)0.3–0.5 mm, adaxial nectary narrowly oblong, 0.5–1 mm, equal to or longer than stipe, nectaries distinct or connate and cup-shaped;

stipe 0–0.8 mm;

ovary pyriform or ovoid, short-silky, hairs flattened, beak abruptly tapering to styles;

ovules 8–18 per ovary;

styles connate to distinct 1/2 their lengths, 0.2–0.3 mm;

stigmas flat, abaxially non-papillate with rounded tip, broadly cylindrical, or 2 plump lobes, 0.2–0.26–0.36 mm.

adaxial nectary oblong, flask-shaped, or narrowly ovate, 0.4–1 mm, shorter than stipe;

stipe 2–4 mm;

ovary pyriform, glabrous, beaks slightly bulged below styles;

ovules 14–18 per ovary;

styles 0.3–0.5 mm;

stigmas flat, abaxially non-papillate with rounded or pointed tip, 0.16–0.23–0.28 mm.

4.5–5 mm.

2.5–5 mm.

staminate 11–54 × 4–9 mm, flowering branchlet 2–28 mm; pistillate densely flowered (more than 6 flowers), slender or stout, 11–79 × 3–8 mm, flowering branchlet 2–37 mm;

floral bract tawny, 0.8–1.8 mm, apex rounded to retuse, entire, abaxially glabrous.

flowering just before or as leaves emerge; staminate stout, 16–30 × 8–10 mm, flowering branchlet 1.5–4 mm; pistillate loosely flowered, stout, 18–22 × 9–11 mm, flowering branchlet 3–4 mm;

floral bract brown or tawny, 1.2–1.6 mm, apex acute or rounded, abaxially hairy throughout or proximally, hairs straight or wavy.

= 38.