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 broad rudiments or foliaceous on early ones, foliaceous on late ones, (glands numerous adaxially), apex rounded to convex;

petiole (sometimes with spherical glands distally), 4–10 mm, pilose adaxially;

largest medial blade (sometimes amphistomatous), narrowly elliptic, very broadly oblong, lorate, or linear, 67–130 × 9.5–16 mm, 4.7–12.4 times as long as wide, base cuneate to convex, margins serrulate to serrate, apex acuminate, caudate, or acute, abaxial surface (usually not glaucous, rarely thinly so), glabrous or puberulent, hairs wavy, adaxial slightly glossy, pilose to glabrescent;

proximal blade margins entire or shallowly serrulate;

juvenile blade sparsely velvety to pilose abaxially, hairs white.

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.

abaxial nectary (0.2–)0.3–0.6 mm, adaxial nectary square to ovate, 0.2–0.6 mm, nectaries distinct;

stamens 4–6(–8);

filaments (sometimes basally connate), hairy on proximal 1/2;

anthers 0.4–0.5 mm, (axes straight).

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.

adaxial nectary square (flattened), 0.2–0.6 mm;

stipe 1.2–3.2 mm;

ovary pyriform, (sometimes villous), beak slightly bulged or abruptly tapering to styles;

ovules 12–18 per ovary;

styles 0.1–0.3 mm;

stigmas 0.2–0.29–0.32 mm.

4.5–11 mm.

6–7 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.

staminate 19–80 × 6–10 mm, flowering branchlet 2–23 mm; pistillate 23–82 × 6–15 mm, flowering branchlet 2–48 mm;

floral bract 1.4–2.4 mm, apex acute or rounded, entire or toothed, abaxially sparsely to moderately densely hairy, hairs wavy; pistillate bract deciduous after flowering.

= 76.

= 38.