Flora of North America species comparison

trailing;

branches red-brown or yellow-brown, glabrous;

branchlets red-brown, glabrous.

stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute or rounded;

petiole convex to flat, or shallowly grooved adaxially, 3–27 mm, puberulent, pubescent, tomentose, velvety, or glabrous adaxially;

largest medial blade (sometimes hemiamphistomatous), narrowly oblong, narrowly elliptic, or lanceolate, 28–116 × 10–30 mm, 2.6–3.5–7 times as long as wide, base subcordate, convex, or rounded, margins flat or slightly revolute, serrate, shallowly serrulate or crenulate, apex acuminate to acute, abaxial surface glabrous, pilose, or pubescent, midribs hairy, adaxial dull or slightly glossy, glabrous, pilose, sparsely long-silky, or tomentose, midribs hairy;

proximal blade margins entire or shallowly serrulate;

juvenile blade reddish or yellowish green, glabrous, pilose, or villous abaxially, hairs white.

(prominently marcescent, becoming skeletonized);

stipules absent or rudimentary;

petiole (deeply grooved or convex to flat adaxially), 1.2–3.2(–4.8) mm, (sparsely pubescent adaxially);

largest medial blade amphistomatous, (2 pairs secondary veins arising at or close to base, arcing toward apex), elliptic, broadly elliptic, obovate, subcircular, or circular, 7–15 × 3–11 mm, 1.1–2.5(–3.5) times as long as wide, base convex or cuneate, margins flat, entire, sometimes ciliate, apex convex, rounded, or retuse, abaxial surface not glaucous, glabrous, midrib sometimes pilose, hairs long, straight, wavy, or crinkled, adaxial highly glossy, glabrous;

proximal blade margins entire;

juvenile blade (green), glabrous abaxially or ciliate.

adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.8–1 mm;

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

anthers yellow or purple turning yellow, (ellipsoid), 0.5–0.7 mm.

abaxial nectary absent, adaxial nectary narrowly oblong or oblong, 0.4–1.1 mm;

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

anthers ellipsoid or obovoid, 0.3–0.5 mm.

adaxial nectary 0.6–0.8 mm, shorter than stipe;

stipe 0.7–2.4(–2.75) mm;

ovary pyriform or obclavate, glabrous, beak sometimes slightly bulged below styles;

ovules 12–18 per ovary;

styles 0.2–0.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.12–0.22–0.32 mm.

abaxial nectary absent, adaxial nectary oblong or narrowly oblong, 0.4–1.6 mm, shorter than or equal to stipe;

stipe 0.4–1.4 mm;

ovary pyriform, sparsely to moderately densely short-silky or villous, at least on beaks, hairs ribbonlike, beak slightly bulged below styles;

ovules 12 per ovary;

styles connate or slightly distinct distally, 0.3–1 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly to broadly cylindrical, 0.16–0.34–0.52 mm.

5–6 mm.

2.9–4.8 mm.

staminate flowering before or just before leaves emerge, pistillate as leaves emerge; staminate slender, stout, or subglobose, 15–44 × 8–14 mm, flowering branchlet 0.5–4 mm; pistillate loosely or moderately densely flowered, slender or stout, 16–74(–115 in fruit) × 7–15 mm, flowering branchlet 0.5–9 mm;

floral bract dark brown or tawny, 0.8–1.6 mm, apex rounded or convex, abaxially hairy throughout or proximally, hairs straight or wavy.

staminate 10–35 × 6–10 mm, flowering branchlet 1–11 mm; pistillate moderately densely flowered, stout or subglobose, 12–38 × 5–11 mm, flowering branchlet 3–14 mm;

floral bract brown, black, or bicolor, 1–1.3 mm, apex rounded, entire, abaxially sparsely hairy, hairs straight or wavy.

= 38.