Flora of North America species comparison

trailing or erect;

branches red-brown, (sometimes weakly glaucous), glabrous;

branchlets yellow-brown or greenish brown, glabrous.

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

petiole convex to flat adaxially, 4–15 mm, tomentose adaxially;

largest medial blade elliptic, broadly elliptic, oblanceolate, or obovate, 65–105 × 22–52 mm, 2–3 times as long as wide, base convex or cuneate, margins slightly revolute, entire, crenate, or sinuate, (glands submarginal), apex acuminate or convex, abaxial surface glaucous, tomentose, hairs erect or spreading, curly, adaxial dull or slightly glossy, pubescent or tomentose;

proximal blade margins entire;

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

stipules (sometimes marcescent) absent or rudimentary on early ones, rudimentary or foliaceous on late ones;

petiole (deeply to shallowly grooved adaxially), 3–9–20 mm, (ciliate, glabrous adaxially);

largest medial blade amphistomatous or hemiamphistomatous, (sometimes with 2 pairs of secondary veins arising at or close to base, arcing toward apex), elliptic, broadly elliptic, or subcircular, 16–42 × 12–30(–38) mm, 1–2 times as long as wide, base convex, cuneate, or rounded, margins flat or slightly revolute, entire or serrulate, ciliate (hairs wavy), apex convex, acuminate, rounded, or retuse, abaxial surface glabrous, adaxial highly glossy, glabrous;

proximal blade margins entire or irregularly serrulate;

juvenile blade pilose to glabrescent abaxially.

adaxial nectary oblong or ovate, 0.5–1 mm;

filaments distinct, glabrous or hairy basally;

anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.7–1 mm.

abaxial nectary (0–)0.2–0.7 mm, adaxial nectary oblong, narrowly oblong, or ovate, 0.6–1.3 mm, nectaries distinct;

filaments distinct (glabrous);

anthers ellipsoid, 0.5–0.6 mm.

adaxial nectary oblong or square, 0.4–1 mm, shorter than stipe;

stipe 1.2–2.7 mm;

ovary pyriform, long-silky, beak slightly bulged below styles;

ovules 12 per ovary;

styles 0.2–0.5 mm;

stigmas slenderly or broadly cylindrical, 0.3–0.6 mm.

abaxial nectary absent, adaxial nectary oblong, 0.5–1.4 mm, longer than stipe;

stipe 0.2–0.8 mm;

ovary pyriform, sometimes glaucous, glabrous, beak gradually tapering to styles;

ovules 12–13 per ovary;

styles connate to distinct 1/2 their lengths, (0.6–)0.8–2 mm;

stigmas flat, abaxially non-papillate with rounded or pointed tip, or slenderly cylindrical, 0.32–0.5–0.88 mm.

5–5.6 mm.

4–10 mm.

flowering before leaves emerge; staminate stout or subglobose, 26–39 × 12–26 mm, flowering branchlet 0–5 mm; pistillate densely flowered, stout or subglobose, 27–54(–75 in fruit) × 4–15 mm, flowering branchlet 1–5(–10) mm;

floral bract dark brown, black, or bicolor, 2–3 mm, apex acute or convex, abaxially hairy, hairs straight.

staminate 13–31 × 7–11 mm, flowering branchlet 1–15 mm; pistillate moderately densely to loosely flowered, stout to globose, 15–54(–90 in fruit) × 6–15 mm, flowering branchlet 2–42 mm;

floral bract brown, 1.6–2 mm, apex rounded, entire, abaxially sparsely hairy throughout or distally, hairs straight or wavy.

= 76.