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 absent or rudimentary;

petiole (sometimes deeply grooved adaxially) 0.2–1.5 mm, long- to short-silky adaxially;

largest medial blade linear, lorate, or narrowly oblanceolate, 13–42 × 1.1–4.4 mm, 5.8–24.6 times as long as wide, base cuneate, margins flat, usually entire, rarely remotely spinulose-serrulate, apex acute to acuminate (apiculate), abaxial surface glaucous or not (sometimes obscured by hairs), densely long-silky, or villous to glabrescent, hairs appressed, straight, adaxial slightly glossy or dull, moderately densely long- or short-silky to glabrescent;

proximal blade margins entire;

juvenile blade yellowish green (color obscured by hairs), very densely long-silky abaxially.

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.

abaxial nectary 0.1–0.6 mm, adaxial nectary oblong or narrowly oblong, 0.5–1.1 mm, nectaries distinct;

filaments hairy on proximal 1/2 or basally;

anthers 0.4–0.7 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 square, narrowly oblong, ovate, or oblong, 0.4–1.4 mm, longer than stipe;

stipe 0–0.3 mm;

ovary pyriform, long-silky or pilose, beak gradually tapering to or bulged below styles;

ovules 16–26 per ovary;

styles 0–0.3 mm;

stigmas slenderly cylindrical, 0.4–0.6 mm.

5–9 mm.

3–6 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 6.5–18 × 4–7 mm, flowering branchlet 1–38(–75) mm; pistillate moderately densely or loosely flowered, slender or stout, 6–16 × 4–7 mm, flowering branchlet 8–13(–120) mm;

floral bract 1.3–2.8 mm, apex acute or convex, toothed or entire (glandular-dotted), abaxially hairy throughout or proximally, hairs straight.

= 38.