Flora of North America species comparison

stipules absent, rudimentary, or foliaceous on early ones, foliaceous on late ones (apex acuminate);

petiole 1.5–8 mm, glabrous adaxially;

largest medial blade lorate, narrowly oblong, narrowly elliptic, narrowly oblanceolate, or linear, 30–133 × 5–20 mm, 3.4–8–15 times as long as wide, base cuneate or convex, margins flat, spinulose-serrulate or entire, apex acute, acuminate, or convex, abaxial surface glaucous or not, pilose, villous, or long-silky to glabrescent, hairs appressed or spreading, wavy, adaxial slightly glossy, villous to glabrescent;

proximal blade margins entire or serrulate;

juvenile blade reddish or yellowish green, densely villous abaxially.

stipules (usually marcescent), foliaceous, (linear or lanceolate, 2–9.8–23 mm), apex acuminate;

petiole convex to flat adaxially, 2.8–10(–15) mm, glabrous or puberulent adaxially;

largest medial blade narrowly elliptic, elliptic, or obovate, 22–75 × 8–26 mm, 1.7–4.7 times as long as wide, base cuneate, margins flat to slightly revolute, entire, crenate, or serrulate, apex acuminate, acute, or convex, abaxial surface glaucous, glabrous or pubescent, midrib pilose, hairs (white, sometimes also ferruginous), straight, adaxial highly to slightly glossy, midrib glabrous or sparsely pubescent;

proximal blade margins entire;

juvenile blade green, glabrous or pubescent abaxially, hairs white, sometimes also ferruginous.

abaxial nectary 0.3–0.9 mm, adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.4–1.2 mm, nectaries distinct;

filaments densely hairy on proximal 1/2;

anthers 0.55–0.7–0.9 mm.

adaxial nectary narrowly oblong to oblong, 0.6–1 mm;

filaments distinct or connate less than 1/2 their lengths, glabrous;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.4–0.8 mm.

adaxial nectary ovate, oblong, or flask-shaped, 0.4–1.1 mm, longer than stipe, nectaries distinct or connate and cup-shaped;

stipe 0–0.7 mm;

ovary obclavate or pyriform, glabrous, beak abruptly tapering to styles;

ovules 13–22 per ovary;

styles 0–0.14–0.5 mm;

stigmas slenderly cylindrical or 2 plump lobes, 0.2–0.5 mm.

adaxial nectary narrowly oblong to oblong, 0.4–1.6 mm, longer than stipe;

stipe 0.2–0.8 mm;

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

ovules 12–16 per ovary;

styles 1–1.8 mm;

stigmas slenderly cylindrical, 0.44–0.63–0.96 mm.

4–5 mm.

3.2–5.6 mm.

staminate 18–48 × 5–13 mm, flowering branchlet 3–15 mm; pistillate moderately densely flowered, slender or stout, 22–58 × 4–9 mm, flowering branchlet 4–12 mm;

floral bract (sometimes brown), 1.3–2.8 mm, apex rounded (sometimes truncate), entire or erose, abaxially hairy mainly proximally, hairs wavy.

flowering before leaves emerge; staminate stout or subglobose, 21–53 × 12–19 mm, flowering branchlet 0–3 mm; pistillate densely flowered, slender to stout, 27–82 × 8–20 mm, flowering branchlet 0–3(–8) mm;

floral bract brown or black, 1.6–2.8 mm, apex acute or rounded, abaxially hairy distally, hairs straight.

= 76.