Flora of North America species comparison

erect;

branches gray-brown, hairy;

branchlets red-brown, sparsely or moderately densely pubescent, (buds alba-type).

stipules (sometimes marcescent), foliaceous, apex rounded or acute;

petiole shallowly grooved or convex to flat adaxially, 1.5–11 mm, pilose or tomentose adaxially;

largest medial blade (sometimes amphistomatous), narrowly oblong, oblong, elliptic, or broadly elliptic, 10–100 × 5–44 mm, 1.5–3.4 times as long as wide, base convex, rounded, subcordate, or cordate, margins flat or slightly revolute, entire or serrulate, apex acuminate, acute, or convex, abaxial surface not glaucous, moderately densely tomentose, villous, or pilose to glabrescent, hairs wavy or straight, adaxial dull or slightly glossy, pilose or moderately densely villous to glabrescent;

proximal blade margins entire or shallowly serrulate;

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

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

petiole (shallowly grooved adaxially), 3–10 mm, (puberulent or villous);

largest medial blade oblong, narrowly elliptic, elliptic, oblanceolate, or obovate, 17–50 × 8–18 mm, 1.9–3.2 times as long as wide, base cuneate or convex, margins flat or slightly revolute, entire, apex acuminate or convex, abaxial surface glabrescent or sparsely silky, hairs appressed or somewhat spreading, (usually white, sometimes also ferruginous), straight or wavy, adaxial dull or slightly glossy, glabrous, glabrescent, pilose, or sparsely long-silky along midribs and margin, (hairs usually white, sometimes also ferruginous, appressed);

proximal blade margins entire;

juvenile blade sparsely to moderately densely villous or long-silky abaxially (hairs usually white, sometimes also ferruginous).

adaxial nectary oblong or square, 0.2–0.8 mm;

filaments distinct, glabrous;

anthers yellow or purple turning yellow, 0.4–1 mm.

abaxial nectary (0–)0.3–0.6 mm, adaxial nectary oblong or ovate, 0.4–1.2 mm, nectaries distinct;

filaments distinct, hairy basally or on proximal 1/2;

anthers globose, 0.4–0.6 mm.

adaxial nectary oblong, square, or ovate, 0.3–0.7 mm, shorter than stipe;

stipe 0.3–2 mm;

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

ovules 10–28 per ovary;

styles 0.5–1.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, broadly cylindrical, or 2 plump lobes, 0.16–0.34–0.4 mm.

abaxial nectary absent, adaxial nectary oblong, 0.4–1.3 mm, shorter than stipe;

stipe 0.8–1.3 mm;

ovary pyriform, very densely long-silky, beak gradually tapering to or slightly bulged below styles;

ovules 6–14 per ovary;

styles 0.5–1 mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly to slenderly cylindrical, 0.28–0.35–0.48 mm.

3.5–8 mm.

5.6–7.2 mm.

flowering as leaves emerge; staminate stout or subglobose, 15–37 × 8–20 mm, flowering branchlet 2–33 mm; pistillate densely or moderately densely flowered, slender, stout, or subglobose, 17–60 × 7–15 mm, flowering branchlet 3–15(–30) mm;

floral bract tawny, brown, or bicolor, 1–3 mm, apex acute or rounded, abaxially hairy, hairs straight or wavy.

staminate 14–31 × 8–18 mm, flowering branchlet 1.5–9 mm; pistillate loosely flowered, stout to globose, 10–58 × 7–25 mm, flowering branchlet 3.5–26 mm;

floral bract tawny, 1–1.6 mm, apex rounded, entire, abaxially sparsely hairy, almost glabrous, hairs wavy.

= 38.

= 76, 95, 114.