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 usually absent or rudimentary, sometimes foliaceous on early ones (apex acute), rudimentary or foliaceous on late ones;

petiole 2–5 mm, short-silky adaxially;

largest medial blade (sometimes hypostomatous, glands marginal), linear or very narrowly elliptic, 58–115 × 5–17 mm, 5.7–12.8 times as long as wide, base acute or cuneate, margins flat to slightly revolute, remotely spinulose-serrulate or sinuate, apex acuminate, abaxial surface glaucous (sometimes obscured by hairs), sparsely to very densely short- or long-silky, hairs appressed to slightly spreading, straight, adaxial dull, pubescent or long-silky;

proximal blade margins entire or remotely denticulate;

juvenile blade color obscured by hairs, densely short-silky abaxially.

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 0.3–0.9 mm, adaxial nectary narrowly oblong, oblong, ovate, or flask-shaped, 0.5–1 mm, nectaries distinct or connate and shallowly cup-shaped;

filaments hairy on proximal 1/2, throughout, or basally;

anthers 0.8–1.3 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 0.3–0.4 mm), adaxial nectary narrowly oblong, ovate, or flask-shaped, 0.4–1.3 mm, longer than stipe, nectaries distinct or connate and shallowly or partially cup-shaped;

stipe 0.2–0.7 mm;

ovary pyriform, long-silky, beak abruptly tapering to styles;

ovules 18–30 per ovary;

styles 0.1–0.2(–0.4) mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly cylindrical, (0.3–)0.5–1.1 mm.

4.5–11 mm.

3.4–5.6 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 20–83 × 5–13 mm, flowering branchlet 6–125(–200) mm; pistillate densely to moderately densely flowered, slender or stout, 35–90 × 5–12 mm, flowering branchlet 11–160 mm;

floral bract 1.4–4 mm, apex acute, rounded, retuse, or truncate, entire or toothed, abaxially hairy throughout or proximally, hairs straight or wavy.

= 76.

= 38.