Flora of North America species comparison

erect or decumbent;

branches gray-brown or red-brown, villous or short-silky to glabrescent;

branchlets red-brown, long-silky, villous, or woolly.

stipules absent or rudimentary on early ones, foliaceous or rudimentary on late ones;

petiole (deeply to shallowly grooved adaxially), (0.5–)1–3(–4) mm, (usually shorter than or barely exceeding subtended bud);

largest medial blade hypostomatous, narrowly oblong, oblong, narrowly elliptic, elliptic, narrowly oblanceolate, ovate, or obovate, base rounded, convex, cordate, or subcordate, margins flat, entire, apex rounded, acute, or convex, abaxial surface (sometimes obscured by hairs), densely villous, woolly, or long-silky, adaxial slightly glossy, pilose, villous, or long-silky to glabrescent, (hairs straight or wavy);

proximal blade margins entire;

juvenile blade very densely long-silky abaxially.

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

petiole (margins covering groove, not glandular or with spherical glands distally), 7–21 mm, glabrous or puberulent adaxially;

largest medial blade (sometimes amphistomatous), very narrowly elliptic, elliptic, lanceolate, or lorate, 55–130 × 24–37 mm, 2.8–6 times as long as wide, base convex, cuneate, or cordate, margins serrulate, apex acuminate to caudate, abaxial surface glaucous, glabrous, adaxial dull, glabrous or sparsely pubescent along midrib;

proximal blade margins entire or shallowly serrulate;

juvenile blade glabrous or pubescent abaxially, hairs white and/or ferruginous.

abaxial nectary (0–)0.5–1.5 mm, adaxial nectary 0.5–1.4 mm, nectaries distinct or connate and cup-shaped;

filaments distinct or connate less than 1/2 their lengths, glabrous or hairy throughout or on proximal 1/2;

anthers ellipsoid, shortly cylindrical, or globose, 0.3–0.8 mm.

abaxial nectary 0.2–0.7 mm, adaxial nectary narrowly oblong to square, 0.3–0.8 mm, nectaries distinct;

stamens 3–7;

filaments hairy on proximal 1/2 or basally;

anthers 0.5–0.6 mm.

abaxial nectary often present, adaxial nectary longer than stipe;

stipe 0–0.6 mm;

ovary pyriform, very densely villous, tomentose, or woolly, beak slightly bulged below styles;

ovules 2–10 per ovary;

styles connate to distinct 1/2 their lengths, 0.4–1.5 mm;

stigmas broadly or slenderly cylindrical, 0.24–0.3–0.48 mm.

adaxial nectary square, 0.1–0.6 mm;

stipe 1.4–3.2 mm;

ovary pyriform, beak slightly bulged below styles;

ovules 16–18 per ovary;

styles 0.2–0.4 mm;

stigmas 0.24–0.31–0.4 mm.

3–6.5 mm.

3–7 mm.

staminate 5.3–24 × 4–10 mm, flowering branchlet 0.3–24(–43) mm;

pistillate (and staminate) densely flowered, globose, subglobose, or stout, 6–25 × 4–15 mm, flowering branchlet 0.3–11 mm;

floral bract tawny or greenish, 1–3 mm, apex rounded or convex, entire, abaxially hairy, hairs straight or wavy.

staminate 23–80 × 5–12 mm, flowering branchlet 3–28 mm;

pistillate 41–110(–127 in fruit) × 8–16 mm, flowering branchlet 17–35 mm;

floral bract 1.5–2.8 mm, apex acute to rounded, entire or toothed, abaxially sparsely to moderately densely hairy proximally, hairs wavy;

pistillate bract deciduous after flowering.

= 38.