Flora of North America species comparison

stipules rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute or rounded;

petiole convex to flat adaxially, 4–15 mm, tomentose adaxially;

largest medial blade elliptic, broadly elliptic, oblanceolate, or obovate, 65–105 × 22–52 mm, 2–3 times as long as wide, base convex or cuneate, margins slightly revolute, entire, crenate, or sinuate, (glands submarginal), apex acuminate or convex, abaxial surface glaucous, tomentose, hairs erect or spreading, curly, adaxial dull or slightly glossy, pubescent or tomentose;

proximal blade margins entire;

juvenile blade yellowish green, sparsely to densely tomentose abaxially, hairs white.

stipules (sometimes marcescent), foliaceous, 3.5–10–23 mm, 1–1.4–2.8 times as long as wide, usually lanceolate, ovate, or suborbiculate, (pleated when pressed), apex rounded, convex, or acute;

petiole shallowly grooved adaxially, 3–11.3–26 mm, villous adaxially;

largest medial blade elliptic to broadly elliptic, 36–65–100 × 17–35.5–85 mm, 1.1–1.9–2.9 times as long as wide, base convex, rounded, subcordate, or cordate, margins thickened, serrulate or spinulose-serrulate (sometimes teeth absent, margins with spherical glands), apex acuminate, acute, or convex, abaxial surface glaucous or not, pilose or villous, hairs curved, adaxial dull, pilose or villous to glabrescent;

proximal blade margins entire (glands only) or serrulate;

juvenile blade green, glabrous, pilose, or moderately densely villous abaxially, hairs white.

adaxial nectary oblong or ovate, 0.5–1 mm;

filaments distinct, glabrous or hairy basally;

anthers yellow or purple turning yellow, ellipsoid or shortly cylindrical, 0.7–1 mm.

adaxial nectary oblong, 0.6–1.2 mm;

filaments distinct, glabrous or hairy basally;

anthers yellow or purple turning yellow, 0.6–1 mm.

adaxial nectary oblong or square, 0.4–1 mm, shorter than stipe;

stipe 1.2–2.7 mm;

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

ovules 12 per ovary;

styles 0.2–0.5 mm;

stigmas slenderly or broadly cylindrical, 0.3–0.6 mm.

adaxial nectary oblong, narrowly oblong, or square, 0.5–1 mm, (unlobed), shorter to longer than stipe;

stipe 0.4–1.5 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 18–30 per ovary;

styles 1.1–2.8 mm;

stigmas slenderly cylindrical, 0.32–0.53–1 mm.

5–5.6 mm.

4–7 mm.

flowering before leaves emerge; staminate stout or subglobose, 26–39 × 12–26 mm, flowering branchlet 0–5 mm; pistillate densely flowered, stout or subglobose, 27–54(–75 in fruit) × 4–15 mm, flowering branchlet 1–5(–10) mm;

floral bract dark brown, black, or bicolor, 2–3 mm, apex acute or convex, abaxially hairy, hairs straight.

flowering before leaves emerge; staminate stout, 39–56 × 14–22 mm, flowering branchlet 0–2 mm; pistillate densely flowered, stout, 39–70(–110 in fruit) × 13–22 mm, flowering branchlet 0–2 mm;

floral bract dark brown, 1.8–4 mm, apex acute or rounded, abaxially sparsely hairy, hairs straight or wavy.

= 76.