Flora of North America species comparison

trailing;

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

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 rudimentary or absent;

petiole shallowly grooved adaxially, 3–11 mm, pubescent, or velvety to glabrescent adaxially;

largest medial blade lorate or very narrowly elliptic, 38–110 × 6–19 mm, 5–9 times as long as wide, base cuneate or convex, margins flat to slightly revolute, entire, serrate, serrulate, or spinulose-serrate, apex acute to acuminate, abaxial surface glaucous, densely long-silky to glabrescent, hairs (white, sometimes also ferruginous), adaxial dull or slightly glossy, glabrous or sparsely pubescent, (hairs white, sometimes also ferruginous);

proximal blade margins sometimes serrulate;

juvenile blade moderately densely long-silky abaxially, hairs white, sometimes also ferruginous.

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 square, ovate, or oblong, 0.3–0.7 mm;

filaments distinct, hairy basally;

anthers purple turning yellow, ellipsoid or globose, 0.4–0.6 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 to ovate, 0.3–0.9 mm;

stipe 1.5–4 mm;

ovary pyriform, beak abruptly tapering to styles;

ovules 6–12 per ovary;

styles 0–0.5 mm;

stigmas slenderly to broadly cylindrical, 0.26–0.4–0.8 mm.

4.5–5 mm.

5–9 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 as leaves emerge; staminate stout to globose, 12–29 × 6–17 mm, flowering branchlet 0.8–3 mm; pistillate loosely flowered, stout to globose, 12–39 × 6–18 mm, flowering branchlet 1–11 mm;

floral bract brown, tawny, light rose, or bicolor, 1–2 mm, apex rounded, abaxially sparsely hairy, hairs straight.

= 38.

= 38.