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 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.

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 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.

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 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.

5–9 mm.

5–6 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.

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.

= 38.