Flora of North America species comparison

trailing or erect;

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

branchlets yellow-brown or greenish brown, glabrous.

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

petiole 1–5(–9) mm, glabrous or sparsely villous adaxially;

largest medial blade linear to lorate, 60–160 × 4–11 mm, (6.5–)11–19(–31) times as long as wide, base cuneate, margins flat, remotely spinulose-serrulate (teeth 2–5 per cm), apex acute or subacuminate, abaxial surface thinly glaucous, densely villous or long-silky to glabrescent, adaxial slightly glossy, pilose or densely villous to glabrescent;

proximal blade margins entire;

juvenile blade reddish or yellowish green, moderately densely to sparsely long-silky abaxially.

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.

abaxial nectary 0.5–1.1 mm, adaxial nectary ovate, narrowly oblong, or flask-shaped, 0.6–1.4 mm, nectaries distinct;

filaments hairy;

anthers 0.4–0.9 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 narrowly oblong, 0.4–1.1 mm, shorter to longer than stipe;

stipe 0.4–0.8 mm;

ovary obclavate to pyriform, glabrous, glabrescent, or long-silky, beak abruptly tapering to styles;

ovules 16–36 per ovary;

styles 0–0.2 mm;

stigmas flat, abaxially non-papillate with pointed tip, or broadly cylindrical, 0.3–0.7 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.

(4–)5–8(–10) mm.

4–10 mm.

(flowering throughout season); staminate 20–61 × 4–10 mm, flowering branchlet 3–20 mm; pistillate loosely flowered, slender or stout, 20–67 × 5–9 mm, flowering branchlet 3–19 mm;

floral bract (sometimes greenish), 1.5–3.5 mm, apex acute, acuminate, or rounded, entire, erose, or toothed, abaxially hairy either proximally or distally, hairs wavy.

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.

= 38.