Flora of North America species comparison

stipules absent, rudimentary, or foliaceous on early ones, foliaceous on late ones, (1–16 mm), apex acute or acuminate;

petiole convex to flat adaxially, 2–13 mm, velvety or villous adaxially;

largest medial blade usually oblanceolate, sometimes narrowly elliptic, elliptic or obovate, 29–100 × 9–37 mm, 1.7–3.9 times as long as wide, base cuneate or convex, margins strongly to slightly revolute or flat, entire, remotely serrate, crenate, or sinuate, (glands submarginal or epilaminal), apex acuminate, convex, or rounded, abaxial surface glaucous, sparsely to densely short- to long-silky or woolly, hairs (white, sometimes also ferruginous), wavy or straight, adaxial slightly glossy, pilose or moderately densely short-silky, midrib velutinous or villous, (hairs white, sometimes also ferruginous);

proximal blade margins entire, serrulate, or crenulate;

juvenile blade reddish or yellowish green, sparsely to densely villous, short- or long-silky abaxially, hairs white, sometimes also ferruginous.

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

petiole shallowly grooved adaxially, 3–7 mm, tomentose adaxially;

largest medial blade lorate, very narrowly elliptic, or oblanceolate, 58–144 × 11–30 mm, 2.8–7 times as long as wide, base convex or cuneate, margins slightly revolute, entire, irregularly serrate, serrulate, or sinuate, apex convex, acute, or acuminate, abaxial surface glaucous (sometimes obscured by hairs), sparsely to densely tomentose or woolly, hairs wavy, adaxial slightly glossy or dull, sparsely tomentose or villous;

proximal blade margins entire;

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

adaxial nectary oblong or square, 0.4–0.9 mm;

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

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.7–1.2 mm.

adaxial nectary very narrowly oblong, 0.8–1.4 mm;

filaments distinct or connate basally, glabrous;

anthers yellow, ellipsoid or globose, 0.4–0.6 mm.

adaxial nectary oblong or square, 0.2–0.8 mm, shorter than stipe;

stipe 0.8–2.3 mm;

ovary pyriform or obclavate, densely long-silky, beak slightly bulged below styles;

ovules 10–18 per ovary;

styles 0.2–0.6 mm;

stigmas slenderly cylindrical, 0.4–0.82–1.04 mm.

(abaxial nectary rarely present), adaxial nectary narrowly oblong to oblong, 0.6–1.5 mm, longer than stipe, (nectaries distinct);

stipe 0–0.4 mm;

ovary squat, flask-shaped, very densely tomentose, beak abruptly tapering to styles;

ovules 4–12 per ovary;

styles (sometimes distinct), 0.4–0.8 mm;

stigmas flat, abaxially non-papillate with rounded tip, 0.16–0.24 mm.

4.5–11 mm.

4–6 mm.

flowering before leaves emerge; staminate stout or subglobose, 18–40.5 × 8–22 mm, flowering branchlet 0–4 mm; pistillate very densely flowered, slender or stout, 18–60(–90 in fruit) × 10–22 mm, flowering branchlet 0–8 mm;

floral bract brown, black, or bicolor, 1.5–4.5 mm, apex rounded or acute, abaxially hairy, hairs straight.

flowering before leaves emerge; staminate slender, stout, or subglobose, 12–47 × 7–12 mm, flowering branchlet 0–1 mm; pistillate moderately densely flowered, slender, 19–59(–80 in fruit) × 5–10 mm, flowering branchlet 0–1 mm;

floral bract tawny or light rose, 0.8–1.5 mm, apex rounded, abaxially hairy, hairs straight.

= 76.