Flora of North America species comparison

erect, decumbent, or trailing;

branches red-brown, glabrous;

branchlets yellow-brown or red-brown, glabrous.

stipules foliaceous, apex acute to acuminate;

petiole convex to flat, or shallowly grooved adaxially, 2–6(–9) mm, pilose or villous adaxially;

largest medial blade narrowly to broadly elliptic or narrowly ovate to ovate, 25–92 × 10–45 mm, 1.5–2.6(–3.4) times as long as wide, base convex, cuneate, or rounded, margins slightly revolute or flat, shallowly serrulate or entire, apex acuminate, acute, or convex, abaxial surface glaucous, sparsely pubescent, hairs wavy, adaxial dull to slightly glossy, pilose, sparsely pubescent or glabrous, midrib hairy, (hairs white and ferruginous);

proximal blade margins entire or finely serrulate;

juvenile blade sometimes reddish, sparsely pubescent abaxially, hairs white, sometimes also ferruginous.

stipules absent or rudimentary on early ones, foliaceous on late ones;

petiole 1.5–4.9–14 mm;

largest medial blade amphistomatous or hemiamphistomatous, elliptic, subcircular, or circular, 8–25 × 4–22 mm, 0.8–2.3 times as long as wide, base convex or rounded, margins slightly revolute, entire, sometimes ciliate, apex rounded or convex, abaxial surface glabrous, adaxial slightly glossy, glabrous;

proximal blade margins entire;

juvenile blade (reddish), glabrous, often ciliate.

adaxial nectary oblong or square, 0.3–0.7 mm;

filaments distinct or basally connate, glabrous;

anthers purple turning yellow, 0.4–0.6 mm.

abaxial nectary 0.6–1 mm, adaxial nectary narrowly oblong to ovate, 0.6–1.3 mm, nectaries distinct;

filaments distinct;

anthers ellipsoid to globose, 0.4–0.6 mm.

adaxial nectary square or obovate, 0.3–0.6 mm, usually shorter than stipe;

stipe 0.4–1.2 mm;

ovary pyriform, glabrous, beak gradually tapering to styles;

ovules 12–22 per ovary;

styles connate (sometimes distinct 1/2 their lengths), 0.2–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly cylindrical, or 2 plump lobes, 0.2–0.32–0.44 mm.

abaxial nectary absent, adaxial nectary narrowly oblong, ovate, or irregularly square, 0.6–1.4 mm, longer than stipe;

stipe 0.2–1 mm;

ovary obnapiform, not glaucous, usually glabrous, sometimes pubescent or short-silky, with hairs in patches or streaks, beak abruptly tapering to styles;

ovules 9–18 per ovary;

styles connate or distinct 1/2 their lengths, 0.5–1.4 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, 0.24–0.32–0.4 mm.

3.2–8 mm.

3–5 mm.

flowering as leaves emerge; staminate slender, stout, or subglobose, 14.5–34.5 × 8–12 mm, flowering branchlet 1–7 mm; pistillate moderately densely or loosely flowered, slender or stout, 21–59 × 6–16 mm, flowering branchlet 1.5–9 mm;

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

staminate 5.5–14 × 5–10 mm, flowering branchlet 1–6 mm; pistillate moderately densely flowered, globose, subglobose, or stout, 8–29 × 6–14 mm, flowering branchlet 1.5–20 mm;

floral bract brown, 1–1.8 mm, apex rounded, abaxially sparsely hairy or ciliate, hairs straight or wavy.

= 38.