Flora of North America species comparison

erect;

branches gray-brown, hairy;

branchlets red-brown, sparsely or moderately densely pubescent, (buds alba-type).

branches yellow-brown or red-brown, not glaucous, glabrous;

branchlets yellow-brown or red-brown, densely pubescent or tomentose.

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

petiole (shallowly grooved adaxially), 3–10 mm, (puberulent or villous);

largest medial blade oblong, narrowly elliptic, elliptic, oblanceolate, or obovate, 17–50 × 8–18 mm, 1.9–3.2 times as long as wide, base cuneate or convex, margins flat or slightly revolute, entire, apex acuminate or convex, abaxial surface glabrescent or sparsely silky, hairs appressed or somewhat spreading, (usually white, sometimes also ferruginous), straight or wavy, adaxial dull or slightly glossy, glabrous, glabrescent, pilose, or sparsely long-silky along midribs and margin, (hairs usually white, sometimes also ferruginous, appressed);

proximal blade margins entire;

juvenile blade sparsely to moderately densely villous or long-silky abaxially (hairs usually white, sometimes also ferruginous).

stipules absent or rudimentary on early ones;

petiole shallowly grooved adaxially, 2–5 mm, tomentose or velvety adaxially;

largest medial blade linear, narrowly oblong, narrowly oblanceolate, or narrowly elliptic, 5–160 × 3–10(–20) mm, base cuneate, margins strongly or slightly revolute, entire or serrulate, (glands submarginal or epilaminal), apex acuminate or acute, abaxial surface glaucous, densely tomentose or woolly, (midribs yellowish, prominent), hairs appressed, curved, adaxial dull or slightly glossy, sparsely pubescent to glabrescent;

proximal blade margins entire;

juvenile blade yellowish green, densely tomentose abaxially, hairs white or gray.

abaxial nectary (0–)0.3–0.6 mm, adaxial nectary oblong or ovate, 0.4–1.2 mm, nectaries distinct;

filaments distinct, hairy basally or on proximal 1/2;

anthers globose, 0.4–0.6 mm.

adaxial nectary oblong or square, 0.3–0.9 mm;

filaments connate less or more than 1/2 their lengths;

anthers yellow, 0.5–0.7 mm.

abaxial nectary absent, adaxial nectary oblong, 0.4–1.3 mm, shorter than stipe;

stipe 0.8–1.3 mm;

ovary pyriform, very densely long-silky, beak gradually tapering to or slightly bulged below styles;

ovules 6–14 per ovary;

styles 0.5–1 mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly to slenderly cylindrical, 0.28–0.35–0.48 mm.

adaxial nectary oblong or square, 0.3–0.7 mm;

ovary obclavate, beak gradually tapering to styles;

ovules 2 per ovary;

styles 0.7–0.9 mm.

5.6–7.2 mm.

3–5 mm.

staminate 14–31 × 8–18 mm, flowering branchlet 1.5–9 mm; pistillate loosely flowered, stout to globose, 10–58 × 7–25 mm, flowering branchlet 3.5–26 mm;

floral bract tawny, 1–1.6 mm, apex rounded, entire, abaxially sparsely hairy, almost glabrous, hairs wavy.

flowering just before or as leaves emerge; staminate stout or slender, 26–34 × 6–10 mm, flowering branchlet 1–1.5 mm; pistillate moderately to very densely flowered, slender or stout, 19–40 × 3–10 mm, flowering branchlet 0.3–3.5 mm;

floral bract light brown or tawny, 1.5–4 mm, apex rounded, truncate, or acute, entire or toothed, abaxially hairy, hairs straight.

= 76, 95, 114.

= 38.