Flora of North America species comparison

branches divaricate, sometimes ± brittle at base, yellow-brown to dark red-brown, not or weakly glaucous, pilose to glabrescent, peeled wood often with very dense striae, to 25 mm;

branchlets yellow-green or red-brown, moderately to very densely villous to glabrescent.

(decumbent);

branches gray-brown, red-brown, or yellow-brown, not to strongly glaucous (dull or slightly glossy), pubescent;

branchlets gray-brown, red-brown, or yellow-brown, sparsely pubescent.

stipules rudimentary or absent on early ones, apex acute, acuminate, or convex;

petiole convex to flat adaxially, 2–5.5–13 mm, pubescent adaxially;

largest medial blade narrowly oblong, narrowly elliptic, elliptic, oblanceolate, or obovate, 20–44–87 × 10–16–45 mm, base cuneate, convex, or rounded, margins flat, entire, crenate, or irregularly serrate, glands submarginal, apex acute, acuminate, or convex, abaxial surface glaucous, moderately densely pubescent or long-silky to glabrescent, hairs white or gray, wavy, adaxial finely impressed-reticulate, dull or slightly glossy, moderately densely pubescent, sparsely short-silky, or glabrescent, hairs white or gray;

proximal blade margins entire, gland-dotted;

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

stipules rudimentary, foliaceous, or absent on early ones, foliaceous on late ones (0.2–1.8(–5) mm);

petiole deeply to shallowly grooved adaxially, 1.5–8 mm, glabrous or pubescent adaxially;

largest medial blade (sometimes amphistomatous), elliptic, narrowly elliptic, obovate, or broadly obovate, 17–74 × 8–30 mm, 1.2–4.5 times as long as wide, base cuneate, convex, or subcordate, margins flat, serrulate, crenulate, or sinuate, apex acute, convex, or acuminate, abaxial surface not glaucous, glabrous, adaxial slightly glossy, glabrous;

proximal blade margins crenate;

juvenile blade reddish or yellowish green, glabrous.

adaxial nectary oblong or ovate, 0.3–0.8 mm;

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

anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.5–0.8 mm.

adaxial nectary oblong, ovate, or square, 0.2–0.34–0.4 mm;

filaments distinct, glabrous;

anthers purple turning yellow, 0.3–0.6 mm.

adaxial nectary oblong or square, 0.3–0.8 mm;

ovary obclavate, beak slightly bulged below styles (long-beaked);

ovules 6–16 per ovary;

styles 0.1–0.4 mm;

stigmas slenderly to broadly cylindrical.

adaxial nectary square, oblong, or ovate, 0.2–0.4 mm, shorter than stipe;

stipe 0.6–1.7 mm;

ovary pyriform, glabrous, beak gradually tapering to or slightly bulged below styles;

ovules (6–)10–14 per ovary;

styles connate or distinct 1/2 their lengths, 0.3–0.7 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.16–0.23–0.32 mm.

5–9 mm.

4–6 mm.

staminate flowering just before leaves emerge, pistillate flowering as leaves emerge; staminate stout to globose, 10–42 × 7–16 mm, flowering branchlet 0.5–11 mm; pistillate loosely flowered, stout, slender, or subglobose, 16.5–85 × 9–32 mm, flowering branchlet 1–26 mm;

floral bract tawny, 1.2–3.2 mm, apex rounded, abaxially hairy to glabrescent, hairs straight or wavy.

flowering as leaves emerge; staminate stout, 11.5–39 × 5–14 mm, flowering branchlet 0.5–6 mm; pistillate moderately densely flowered or densely flowered, slender or stout, 16–46(–50 in fruit) × 4–15 mm, flowering branchlet 1.5–12 mm;

floral bract brown, black, tawny, or bicolor, 0.4–1.1 mm, apex retuse or acute, abaxially hairy throughout or proximally, hairs curly or wavy.

= 38.

= 38.