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 (highly to ± brittle at base), yellow-brown or red-brown, usually strongly glaucous, (slightly glossy), glabrous or glabrescent;

branchlets red-brown or mottled yellow-brown, (strongly to not glaucous), glabrous, puberulent, pilose, or velvety, (buds caprea-type or intermediate).

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 usually rudimentary or absent, or foliaceous, then small and ovate or slender, apex acute;

petiole convex to flat, or shallowly grooved adaxially, 2–12 mm, villous or velvety adaxially;

largest medial blade lorate, narrowly elliptic, elliptic, or oblanceolate, 40–85 × 9–26 mm, 3–6.2 times as long as wide, base cuneate or convex, margins slightly revolute, entire, or shallowly crenate to sinuate, apex acute, acuminate, or convex, abaxial surface glaucous (obscured by hairs), densely short- to long-silky, hairs (white, sometimes also ferruginous), straight or wavy, adaxial slightly glossy or dull, sparsely short-silky to glabrescent, (hairs white, sometimes also ferruginous);

proximal blade margins entire;

juvenile blade green, very densely short-silky abaxially (sparsely so adaxially), hairs white, sometimes also 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 oblong, 0.3–0.6 mm;

filaments distinct, glabrous;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.4–0.6 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 narrowly oblong, oblong, or ovate, 0.4–1 mm, shorter to longer than stipe;

stipe 0.3–2 mm;

ovary pyriform, short-silky, beak gradually tapering to styles;

ovules 6–17 per ovary;

styles 0.5–1.5 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly to broadly cylindrical, 0.32–0.43–1 mm.

4–6 mm.

2.5–6 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 before leaves emerge; staminate stout, 19–40 × 8–20 mm, flowering branchlet 0 mm; pistillate densely flowered, slender or stout, 22–87(–105 in fruit) × 8–18 mm, flowering branchlet 0–3(–6) mm;

floral bract brown or black, 1.2–2.8 mm, apex acute or rounded, abaxially hairy, hairs straight.

= 38.

= 38, 57, 76.