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 or foliaceous on early ones, foliaceous on late ones, apex convex to acute;

petiole (with spherical glands distally), (3–)4.5–14(–22) mm, tomentose or pilose adaxially;

largest medial blade lorate or lanceolate to narrowly lanceolate, (50–)75–115(–220) × 10–22(–35) mm, 5–10 times as long as wide, base usually convex or cuneate, sometimes rounded to cordate, margins serrate or serrulate, apex acuminate, acute, or caudate, abaxial surface glabrous or sparsely tomentose on midribs, hairs white and/or ferruginous, wavy, adaxial highly glossy, glabrous or pilose, hairs white and/or ferruginous;

proximal blade margins entire or serrulate;

juvenile blade glabrous, or moderately densely tomentose or silky abaxially, hairs white and ferruginous.

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 0.3–0.5 mm, adaxial nectary oblong to narrowly oblong, 0.3–0.6 mm, nectaries distinct;

stamens 4–7;

filaments (sometimes connate less than 1/2 their lengths), hairy basally;

anthers 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.

adaxial nectary oblong, square, or ovate, 0.3–0.7 mm;

stipe 1.3–5.3 mm;

ovary pyriform to obclavate, beak slightly bulged below styles;

ovules 12–16 per ovary;

styles (sometimes distinct distally), 0.1–0.2 mm;

stigmas 0.16–0.2–0.28 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.

staminate 28–97 × 5–11 mm, flowering branchlet 4–25 mm; pistillate 33–93 × 7–15 mm, flowering branchlet 3–35 mm;

floral bract 1–3 mm, apex acute or rounded, entire or erose, abaxially sparsely hairy, hairs wavy; pistillate bract deciduous after flowering.

= 76.