Flora of North America species comparison

trailing;

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

branches dark gray-brown to yellow-brown, not glaucous, woolly in patches or floccose to glabrescent;

branchlets yellow-brown to red-brown or gray-brown, densely (white) woolly or tomentose, sometimes floccose.

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 foliaceous on early ones, late ones 2–3.6 mm, apex acute;

petiole shallowly to deeply grooved adaxially, 3–10 mm, tomentose or densely (white) woolly adaxially (obscured by hairs);

largest medial blade lorate, narrowly elliptic or oblanceolate, 47–103 × 5–20 mm, base convex or cuneate, margins strongly to slightly revolute, entire, or sinuate, apex acute or convex, abaxial surface glaucous (generally obscured by hairs), very densely to sparsely tomentose-woolly (cobwebby in age), hairs dull white, crinkled, adaxial dull or slightly glossy, moderately densely to sparsely tomentose, floccose, hairs dull white;

proximal blade margins entire;

juvenile blade yellowish green, very densely tomentose 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 to oblong, 0.6–1 mm;

filaments distinct or connate less than 1/2 their lengths;

anthers purple turning yellow, ellipsoid, long-cylindrical, 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, 0.4–1 mm;

ovary pyriform, beak sometimes slightly bulged below styles;

ovules 12–18 per ovary;

styles 0.3–1.9 mm.

4.5–5 mm.

4–6 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 or subglobose, 17–39 × 8–16 mm, flowering branchlet 0.5–7 mm; pistillate densely to moderately densely flowered, stout or slender, 20–66 × 9–18 mm, flowering branchlet 1–24 mm;

floral bract tawny or brown, 1.2–1.8 mm, apex rounded or acute, abaxially hairy, hairs straight to wavy.

= 38.

= 38.