Flora of North America species comparison

(marcescent), stipules absent or rudimentary on early ones, foliaceous on late ones, apex rounded, convex, or acute;

petiole (rarely with spherical glands distally), 4–16 mm, puberulent or pubescent to glabrescent adaxially;

largest medial blade lorate to narrowly lanceolate, 58–155 × 7–27 mm, 4.5–10.7 times as long as wide, base cuneate to convex, margins serrulate to crenulate or entire, apex acuminate to acute, abaxial surface glabrous or glabrescent, hairs appressed, adaxial dull or slightly glossy, glabrous or pilose;

proximal blade margins entire;

juvenile blade glabrous, puberulent, pilose, or sparsely long-silky abaxially, hairs white.

stipules (sometimes marcescent), foliaceous, (3–23 mm), apex acuminate to acute;

petiole convex to flat, or shallowly grooved adaxially, 3–20 mm, tomentose adaxially, (strongly ventricose around floral buds);

largest medial blade broadly oblong, narrowly oblong, narrowly elliptic to elliptic, narrowly oblanceolate, oblanceolate, obovate, or broadly obovate, 50–110 × 13–35 mm, 2–4 times as long as wide, base cuneate or convex, margins strongly revolute, entire or crenate, apex acuminate, acute, or convex, abaxial surface glaucous or not (usually obscured by hairs, midrib yellowish), densely tomentose or villous-tomentose, hairs wavy, adaxial dull, sparsely or moderately densely villous (floccose) to glabrescent, (hairs white or gray);

proximal blade margins entire;

juvenile blade reddish or yellowish green (color often obscured by hairs), very densely woolly-tomentose abaxially, hairs white.

abaxial nectary 0.2–0.6 mm, adaxial nectary oblong, square, or ovate, 0.2–0.6 mm, nectaries distinct or connate and cup-shaped;

stamens 3–7;

filaments hairy basally;

anthers 0.3–0.5 mm.

adaxial nectary narrowly oblong to oblong, 0.5–1.4 mm;

filaments distinct;

anthers purple turning yellow, long-cylindrical, 0.6–0.9 mm.

adaxial nectary square to oblong, 0.3–0.6 mm;

stipe 0.4–2.4 mm;

ovary pyriform to obturbinate, beak slightly bulged below or tapering to styles;

ovules 8–18 per ovary;

styles 0.2–0.3 mm;

stigmas (sometimes slenderly cylindrical), 0.18–0.27–0.32 mm.

adaxial nectary narrowly oblong, 0.6–1.6 mm;

stipe 0–0.4 mm;

ovary pyriform, (hairs refractive, wavy), beak gradually tapering to styles;

ovules 14–18 per ovary;

styles 1.3–2.8 mm;

stigmas 0.4–0.99–1.28 mm.

3–6 mm.

4–5 mm.

(usually flowering throughout season and axillary, sessile), staminate 24–131 × 3–10 mm, flowering branchlet 0–12 mm;

pistillate (densely to loosely flowered), 24–47 × 6–12 mm, flowering branchlet 0–10 mm;

floral bract 0.6–2.2 mm, apex rounded to convex, irregularly toothed or entire, abaxially sparsely to moderately densely hairy proximally, hairs irregularly curly;

pistillate bract persistent after flowering.

flowering before leaves emerge;

staminate stout, 23–55 × 13–27 mm, flowering branchlet 0–6 mm;

pistillate densely flowered, slender to stout, 33–103 × 8–22 mm, flowering branchlet 0–13 mm;

floral bract brown or black, 1.5–2–2.5 mm, apex acute to convex, abaxially sparsely hairy, hairs straight.

= 38.