Flora of North America species comparison

trailing or erect;

branches yellow-brown or red-brown, glabrous or pubescent;

branchlets yellow-brown or red-brown, glabrous or pilose.

stipules (sometimes marcescent), foliaceous, apex rounded or acute;

petiole shallowly grooved or convex to flat adaxially, 1.5–11 mm, pilose or tomentose adaxially;

largest medial blade (sometimes amphistomatous), narrowly oblong, oblong, elliptic, or broadly elliptic, 10–100 × 5–44 mm, 1.5–3.4 times as long as wide, base convex, rounded, subcordate, or cordate, margins flat or slightly revolute, entire or serrulate, apex acuminate, acute, or convex, abaxial surface not glaucous, moderately densely tomentose, villous, or pilose to glabrescent, hairs wavy or straight, adaxial dull or slightly glossy, pilose or moderately densely villous to glabrescent;

proximal blade margins entire or shallowly serrulate;

juvenile blade yellowish green, sparsely to densely long-silky-tomentose abaxially, hairs white.

stipules absent or rudimentary;

petiole 1.5–7 mm (sometimes glandular distally or throughout);

largest medial blade hypostomatous, (veins impressed-reticulate, 2 pairs of secondary veins arising at or close to base, arcing toward apex,), elliptic to broadly elliptic, 6–22 × 4–15 mm, 1.1–2.8 times as long as wide, base convex, rounded, subcordate, or cuneate, margins slightly revolute, entire (glandular-dotted), apex convex, rounded, or retuse, abaxial surface glabrous or with long-silky hairs, adaxial slightly glossy, glabrous;

proximal blade margins entire;

juvenile blade glabrous.

adaxial nectary oblong or square, 0.2–0.8 mm;

filaments distinct, glabrous;

anthers yellow or purple turning yellow, 0.4–1 mm.

abaxial nectary 0.5–1.3 mm, adaxial nectary narrowly oblong, oblong, or square, 0.5–1.2 mm, nectaries connate and cup-shaped;

filaments distinct, glabrous or hairy basally;

anthers ellipsoid or shortly cylindrical, 0.4–0.6 mm.

adaxial nectary oblong, square, or ovate, 0.3–0.7 mm, shorter than stipe;

stipe 0.3–2 mm;

ovary pyriform or obclavate, glabrous, beak gradually to abruptly tapering to styles;

ovules 10–28 per ovary;

styles 0.5–1.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, broadly cylindrical, or 2 plump lobes, 0.16–0.34–0.4 mm.

abaxial nectary (0–)0.2–0.5 mm, adaxial nectary oblong, 0.2–1 mm, longer than stipe, nectaries distinct or connate and shallowly cup-shaped;

stipe 0–0.8 mm;

ovary obturbinate, short-silky, hairs flattened, beak abruptly tapering to styles;

ovules 8–10 per ovary;

styles distinct to connate 1/2 their lengths, 0.2–0.4 mm;

stigmas flat, abaxially non-papillate with rounded tip, 0.2–0.26–0.36 mm.

3.5–8 mm.

3–4 mm.

flowering as leaves emerge; staminate stout or subglobose, 15–37 × 8–20 mm, flowering branchlet 2–33 mm; pistillate densely or moderately densely flowered, slender, stout, or subglobose, 17–60 × 7–15 mm, flowering branchlet 3–15(–30) mm;

floral bract tawny, brown, or bicolor, 1–3 mm, apex acute or rounded, abaxially hairy, hairs straight or wavy.

staminate 7–19 × 2.5–6 mm, flowering branchlet 0.5–17 mm; pistillate densely to loosely flowered (4–17 flowers), stout, subglobose or globose, 7–21 × 2–9 mm, flowering branchlet 1–10 mm;

floral bract tawny or light rose, 0.8–1.8 mm, apex rounded, entire, abaxially glabrous.

= 38.

= 38.