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 glabrous or glabrescent;

branchlets yellow-brown, red-brown, or brownish, usually glabrous, rarely pilose.

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 rudimentary to foliaceous on early ones (absent on proximal ones);

petiole deeply grooved adaxially, margins covering groove, 4–26 mm, pubescent or puberulent to glabrescent adaxially;

largest medial blade oblong, narrowly oblong, narrowly elliptic, elliptic, or lanceolate to obovate, 53–114 × 14–35 mm, 2.7–6.3 times as long as wide, base convex or cuneate, margins flat or slightly revolute, crenate or serrulate, apex acuminate, acute, or ± caudate, abaxial surface glabrous or glabrescent, adaxial dull or slightly glossy, glabrous or glabrescent;

proximal blade margins crenate or crenulate;

juvenile blade reddish.

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.

abaxial nectary 0.2–1.1 mm, adaxial nectary oblong, square, or ovate, 0.2–0.6 mm, distinct;

filaments distinct, hairy on proximal 1/2;

anthers ellipsoid.

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 obovate to square, 0.3–0.5 mm;

ovary pyriform, beak gradually tapering to or slightly bulged below styles;

ovules 30–36 per ovary;

styles distinct 1/2 their lengths, 0.2–0.3 mm;

stigmas flat, abaxially non-papillate with rounded tip, 0.1–0.2 mm.

4–6 mm.

3–6 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.

staminate 20–60 × 5.5–10 mm, flowering branchlet 3–17 mm; pistillate moderately to very densely flowered, slender to stout, 20–60 × 5–8 mm, flowering branchlet 5–31 mm;

floral bract 1–2.3 mm, apex rounded or acute, abaxially hairy (mainly proximally), hairs wavy.

= 38.

= 38 (44), 57, or 88.