Flora of North America species comparison

branches yellow-brown, gray-brown, or yellowish, not glaucous, glabrous or puberulent;

branchlets yellow-brown or yellowish (sometimes color obscured by hairs), glabrous, densely to sparsely villous, velvety, or puberulent.

branches (sometimes highly brittle at base), yellow-brown or red-brown, not to sometimes strongly glaucous, (dull to slightly glossy), glabrous or puberulent at nodes;

branchlets yellow-brown to red-brown, (weakly or strongly glaucous or not), puberulent, (buds alba-type or intermediate, scale inner membranaceous layer free, not separating from outer layer).

stipules (not adnate to petioles), rudimentary or absent on early ones, (late ones sometimes brownish, linear, 5.4–10.4 mm), apex acuminate;

petiole shallowly grooved adaxially, 4–13 mm, villous, puberulent, or velvety adaxially;

largest medial blade linear, lorate, narrowly oblong, or narrowly elliptic, 53–130 × 5–33 mm, base cuneate, margins strongly revolute, sinuate or apparently entire, (glands epilaminal), apex acuminate, acute, or convex, abaxial surface apparently glaucous (obscured by hairs), densely short-silky, woolly, or tomentose, (midribs prominent, yellowish, and hairy), hairs appressed, spreading or erect, straight or wavy, adaxial dull or slightly glossy, sparsely or moderately densely pubescent, hairs gray;

proximal blade margins entire;

juvenile blade yellowish green, very densely tomentose or short-silky abaxially, hairs white.

stipules absent or rudimentary on early ones, foliaceous on late ones, apex acute;

petiole convex to flat adaxially, 5–16 mm, tomentose or velvety adaxially;

largest medial blade (sometimes amphistomatous), lorate or very narrowly to narrowly elliptic, 44–110 × 6–22 mm, 3.4–9.9(–12) times as long as wide, base convex or cuneate, margins flat to slightly revolute, entire or shallowly serrulate, apex acuminate to acute, abaxial surface glaucous, sparsely short- or long-silky to glabrescent, hairs (white, also ferruginous), straight or wavy, adaxial slightly glossy, sparsely short-silky, (hairs also ferruginous);

proximal blade margins entire or shallowly serrulate;

juvenile blade reddish or yellowish green, densely long-silky abaxially, hairs white and ferruginous.

adaxial nectary narrowly oblong or oblong, 0.6–1.5 mm;

filaments distinct;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.6–0.8 mm.

adaxial nectary narrowly oblong, oblong, or ovate, 0.3–0.9 mm;

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

anthers yellow, ellipsoid, shortly cylindrical, or globose, 0.5–0.9 mm.

adaxial nectary narrowly oblong or oblong, 0.9–1.4 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 12–18 per ovary;

styles 0.6–1.8 mm.

adaxial nectary oblong, narrowly oblong, or ovate, 0.4–1 mm;

stipe 1.1–2.1 mm;

ovary pyriform, beak sometimes slightly bulged below styles;

ovules 12 per ovary;

styles 0.3–1 mm;

stigmas flat, abaxially non-papillate with rounded or pointed tip, 0.2–0.3–0.48 mm.

4–6 mm.

5–7 mm.

flowering just before or as leaves emerge; staminate stout, 24–48 mm, flowering branchlet 0–2 mm; pistillate densely flowered, 23–55 mm, flowering branchlet 0–6 mm;

floral bract brown or tawny, 1.6–2.2 mm, apex convex or rounded, abaxially hairy, hairs straight.

flowering just before or, sometimes, as leaves emerge; staminate stout, (1.4–2.7–)16–28 × 9–17 mm, flowering branchlet 1–3 mm; pistillate loosely flowered, stout, (1.5–2.7–)19–44(–65 in fruit) × 10–18 mm, flowering branchlet 1–6 mm;

floral bract brown or bicolor, 1.1–2.4 mm, apex rounded or convex, abaxially hairy, hairs straight.

= 38.

= 76.