Flora of North America species comparison

branches (sometimes ± brittle at base), red-brown, not glaucous (slightly glossy), tomentose to glabrescent;

branchlets red-brown, moderately to very densely villous.

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

petiole convex to flat, or shallowly grooved adaxially, 3–27 mm, puberulent, pubescent, tomentose, velvety, or glabrous adaxially;

largest medial blade (sometimes hemiamphistomatous), narrowly oblong, narrowly elliptic, or lanceolate, 28–116 × 10–30 mm, 2.6–3.5–7 times as long as wide, base subcordate, convex, or rounded, margins flat or slightly revolute, serrate, shallowly serrulate or crenulate, apex acuminate to acute, abaxial surface glabrous, pilose, or pubescent, midribs hairy, adaxial dull or slightly glossy, glabrous, pilose, sparsely long-silky, or tomentose, midribs hairy;

proximal blade margins entire or shallowly serrulate;

juvenile blade reddish or yellowish green, glabrous, pilose, or villous abaxially, hairs white.

stipules foliaceous, apex acute or rounded;

petiole shallowly grooved adaxially, 1–13 mm, tomentose adaxially;

largest medial blade narrowly oblong, or narrowly to broadly elliptic, 33–88 × 13–45 mm, 1.6–3.2 times as long as wide, base cordate, rounded, or convex, margins flat or slightly revolute, serrulate or spinulose-serrulate, apex acuminate, abaxial surface not glaucous, moderately densely villous to glabrescent, midrib remaining hairy, hairs straight or wavy, adaxial dull or slightly glossy, very densely villous to glabrescent, midrib remaining hairy;

proximal blade margins entire or serrulate;

juvenile blade yellowish green, abaxially villous or midrib long-silky, hairs white.

adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.8–1 mm;

filaments distinct or connate less than 1/2 their lengths, glabrous;

anthers yellow or purple turning yellow, (ellipsoid), 0.5–0.7 mm.

adaxial nectary oblong or narrowly oblong, 0.3–1.3 mm;

filaments distinct, glabrous;

anthers yellow, (ellipsoid or shortly cylindrical), 0.6–0.8 mm.

adaxial nectary 0.6–0.8 mm, shorter than stipe;

stipe 0.7–2.4(–2.75) mm;

ovary pyriform or obclavate, glabrous, beak sometimes slightly bulged below styles;

ovules 12–18 per ovary;

styles 0.2–0.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.12–0.22–0.32 mm.

adaxial nectary oblong or narrowly oblong, 0.4–1.3 mm, about same length as stipe;

stipe 0.5–1.4 mm;

ovary pyriform or obclavate, glabrous, beak slightly bulged below styles;

ovules 11–24 per ovary;

styles 0.7–1.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.3–0.36 mm.

5–6 mm.

3.6–7 mm.

staminate flowering before or just before leaves emerge, pistillate as leaves emerge; staminate slender, stout, or subglobose, 15–44 × 8–14 mm, flowering branchlet 0.5–4 mm; pistillate loosely or moderately densely flowered, slender or stout, 16–74(–115 in fruit) × 7–15 mm, flowering branchlet 0.5–9 mm;

floral bract dark brown or tawny, 0.8–1.6 mm, apex rounded or convex, abaxially hairy throughout or proximally, hairs straight or wavy.

flowering as leaves emerge; staminate stout, 17–40 × 8–15 mm, flowering branchlet 1–8 mm; pistillate moderately densely flowered, stout or slender, 27–65 × 8–19 mm, flowering branchlet 3–16 mm;

floral bract brown, 1–2.6 mm, apex acute or rounded, abaxially hairy, hairs straight or wavy.

= 38.