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), red-brown, violet or yellow-brown, usually strongly glaucous, glabrescent;

branchlets yellow-brown or red-brown, (usually strongly glaucous), glabrous or densely to sparsely pubescent or tomentose, (buds caprea-type).

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, rudimentary, absent, or foliaceous on late ones;

petiole convex to flat, or shallowly grooved adaxially, 3–6.3–14 mm, (sometimes dark spherical glands distally), glabrous or pubescent adaxially;

largest medial blade linear, lorate, or narrowly elliptic 40–79–123 × 6–12–20 mm, (2.3–)4.2–7.2–11.3 times as long as wide, base convex or cuneate, margins strongly or slightly revolute, entire, sinuate or sometimes crenulate, (glands submarginal or epilaminal), apex acuminate to acute, abaxial surface glaucous (sometimes obscured by hairs), densely villous, short-silky, woolly, or tomentose to glabrescent, hairs (white, sometimes also ferruginous), straight or wavy, adaxial slightly to highly glossy, glabrous, sparsely villous or pubescent (hairs white, sometimes also ferruginous);

proximal blade margins entire;

juvenile blade reddish or yellowish green, densely tomentose, short-silky, pubescent, or glabrous abaxially, 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 or narrowly oblong, 0.6–1 mm;

filaments distinct, glabrous or hairy basally;

anthers purple turning yellow, ellipsoid, 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 oblong to depressed-ovate, 0.3–1 mm, shorter than or equal to stipe;

stipe 0.5–1.1 mm;

ovary pyriform, short-silky, beak sometimes slightly bulged below styles;

ovules 10–18 per ovary;

styles 0.6–1.5 mm;

stigmas slenderly cylindrical, 0.4–0.55–0.76 mm.

4–6 mm.

3.5–6.5 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, 20–39 × 7–20 mm, flowering branchlet 0–2 mm; pistillate densely flowered, slender, stout, or subglobose, 19–65(–80 in fruit) × 7–17 mm, flowering branchlet 0–7 mm;

floral bract tawny, brown, or black, 1–2.6 mm, apex acute, convex, or rounded, abaxially hairy, hairs straight.

= 38.

= 38.