Flora of North America species comparison

stipules absent or rudimentary;

petiole (shallowly to deeply grooved adaxially), 2–8 mm, (with 2 spherical glands distally, dark brown, sometimes basilaminar, sparsely pubescent or glabrous adaxially);

largest medial blade hypostomatous, (veins strongly impressed-reticulate), broadly elliptic, subcircular, or obovate, 18–67 × 10–40 mm, 1.1–2.3 times as long as wide, base rounded, convex, or subcordate, margins strongly revolute, crenate or subentire, apex rounded, convex, retuse, or toothed, abaxial surface sparsely to densely villous or long-silky, veins often with long, straight hairs, adaxial slightly glossy, glabrous or sparsely long-silky;

proximal blade margins entire or crenate;

juvenile blade (yellowish green), abaxially very densely long-silky.

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.

abaxial nectary 0.6–0.8 mm, adaxial nectary narrowly oblong, 0.5–1.2 mm, nectaries connate and shallowly cup-shaped, or distinct;

filaments distinct, hairy on proximal 1/2;

anthers ellipsoid or globose, 0.3–0.5 mm.

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.

abaxial nectary (0–)0.8–0.9 mm, adaxial nectary oblong, ovate, or narrowly oblong to almost filiform, 0.7–1.4 mm, shorter to longer than stipe, nectaries distinct or connate and cup-shaped;

stipe 0.4–1.2 mm;

ovary pyriform or obnapiform, densely short-silky, hairs cylindrical, beak abruptly tapering to styles;

ovules 13–15 per ovary;

styles connate 1/2 their lengths to almost distinct, 0.2–0.4 mm;

stigmas flat, abaxially non-papillate with rounded tip, slenderly cylindrical, or 2 plump lobes, 0.2–0.28–0.36 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.

3–5 mm.

5–5.6 mm.

staminate 13–48 × 4–6.5(–8) mm, flowering branchlet 3–31(–50) mm; pistillate densely flowered, slender or stout, 18–56 × 4–10 mm, flowering branchlet 3–27(–40) mm;

floral bract tawny, 0.8–1.6 mm, apex rounded, entire, abaxially densely hairy, hairs straight.

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.

= 38.

= 76.