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.

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 (early deciduous), foliaceous or rudimentary on early ones, foliaceous on late ones, apex acute, convex, or rounded;

petiole convex to flat, or shallowly grooved adaxially, 7–20 mm, glabrous or sparsely velvety adaxially;

largest medial blade narrowly oblong, oblong, elliptic, or broadly elliptic, 30–103 × 19–40 mm, 1.5–3.4 times as long as wide, base cordate, subcordate, rounded or convex, margins flat or slightly revolute, serrulate, irregularly serrate, crenate, or sinuate, apex acute or acuminate, abaxial surface glaucous, glabrous, adaxial slightly or highly glossy, glabrous;

proximal blade margins serrulate or entire;

juvenile blade translucent, glabrous or pilose abaxially, hairs white.

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 square or ovate, 0.3–0.5 mm;

filaments distinct, glabrous or sparsely hairy basally;

anthers yellow, (ellipsoid or shortly cylindrical), 0.5–0.8 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 narrowly ovate or square, 0.3–0.7 mm, shorter than stipe;

stipe 1.8–3.5 mm;

ovary obclavate, glabrous, beak slightly bulged below styles;

ovules 10–19 per ovary;

styles 0.4–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.23–0.32 mm.

5–9 mm.

7–8 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.

staminate flowering just before leaves emerge, pistillate flowering as leaves emerge; staminate stout or slender, 18.5–63 × 7–15 mm, flowering branchlet 1–5 mm; pistillate loosely flowered, stout or slender, 25–85 × 8–20 mm, flowering branchlet 2–22 mm;

floral bract tawny, 1–2.4 mm, apex acute or convex, abaxially sparsely to moderately densely hairy, hairs straight or wavy.

= 38.

= 38.