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 foliaceous, apex acute to acuminate;

petiole convex to flat, or shallowly grooved adaxially, 2–6(–9) mm, pilose or villous adaxially;

largest medial blade narrowly to broadly elliptic or narrowly ovate to ovate, 25–92 × 10–45 mm, 1.5–2.6(–3.4) times as long as wide, base convex, cuneate, or rounded, margins slightly revolute or flat, shallowly serrulate or entire, apex acuminate, acute, or convex, abaxial surface glaucous, sparsely pubescent, hairs wavy, adaxial dull to slightly glossy, pilose, sparsely pubescent or glabrous, midrib hairy, (hairs white and ferruginous);

proximal blade margins entire or finely serrulate;

juvenile blade sometimes reddish, sparsely pubescent abaxially, hairs white, sometimes also ferruginous.

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 oblong or square, 0.3–0.7 mm;

filaments distinct or basally connate, glabrous;

anthers purple turning yellow, 0.4–0.6 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 square or obovate, 0.3–0.6 mm, usually shorter than stipe;

stipe 0.4–1.2 mm;

ovary pyriform, glabrous, beak gradually tapering to styles;

ovules 12–22 per ovary;

styles connate (sometimes distinct 1/2 their lengths), 0.2–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or broadly cylindrical, or 2 plump lobes, 0.2–0.32–0.44 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.

3.2–8 mm.

3.6–7 mm.

flowering as leaves emerge; staminate slender, stout, or subglobose, 14.5–34.5 × 8–12 mm, flowering branchlet 1–7 mm; pistillate moderately densely or loosely flowered, slender or stout, 21–59 × 6–16 mm, flowering branchlet 1.5–9 mm;

floral bract brown or bicolor, 1.2–1.8 mm, apex acute to rounded, abaxially glabrate to hairy, hairs straight to 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.

= 38.