Flora of North America species comparison

branches (highly brittle at base), red-brown, not glaucous, tomentose or velvety to glabrescent;

branchlets red-brown or yellow-brown, densely velvety, (buds caprea-type).

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

petiole convex to flat, or shallowly grooved adaxially, 6–16 mm, velvety or tomentose adaxially;

largest medial blade elliptic or obovate, 53–102 × 29–54 mm, 1.3–2.8 times as long as wide, base cuneate or convex, margins slightly revolute, entire or sinuate, apex convex, rounded, or acute, abaxial surface glaucous (sometimes obscured by hairs), densely to sparsely velvety, tomentose, villous, or short-silky, hairs erect or spreading, wavy, adaxial dull, sparsely tomentose or short-silky;

proximal blade margins entire;

juvenile blade green, very densely velvety or long-silky abaxially, hairs white or gray.

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

petiole deeply to shallowly grooved adaxially, 5–15 mm, with pairs or clusters of spherical glands distally or throughout, glabrous adaxially;

largest medial blade hypostomatous, narrowly elliptic, elliptic, or lanceolate, 50–135 × 20–50 mm, 2–4 times as long as wide, base convex, margins slightly revolute or flat, serrulate, apex acuminate, abaxial surface pale not glaucous, glabrous, adaxial highly glossy, glabrous;

proximal blade margins entire or serrulate;

juvenile blade reddish, glabrous abaxially.

adaxial nectary narrowly oblong to oblong, 0.5–1 mm;

filaments distinct or slightly connate, glabrous;

anthers purple turning yellow, ellipsoid, 0.6–0.7 mm.

abaxial nectary 0.6–1.7 mm, adaxial nectary square, ovate, or oblong, 0.5–1.5 mm, nectaries distinct or ± connate and cup-shaped;

stamens 4–10;

filaments distinct, hairy on proximal 1/2;

anthers ellipsoid or globose, 0.5–0.6 mm.

adaxial nectary narrowly oblong to oblong, 0.4–0.9 mm, longer than stipe;

stipe 0–0.3 mm;

ovary obturbinate, short-silky or densely pubescent, beak gradually tapering to styles;

ovules 14–18 per ovary;

styles 0.6–1.2 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.32–0.4 mm.

(abaxial nectary present or absent), adaxial nectary oblong, square, or ovate, 0.4–0.8 mm, (nectaries distinct or connate and shallowly cup-shaped), shorter than or equal to stipe;

stipe 0.5–1.6 mm;

ovary pyriform, beak bulged below or tapering to styles;

ovules 18–22 per ovary;

styles connate or distinct, 0.4–0.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or slenderly cylindrical, 0.4–0.6 mm.

4 mm.

6–9 mm.

flowering before leaves emerge; staminate stout, 25–30 × 6–13 mm, flowering branchlet 0–5 mm; pistillate moderately densely flowered, slender to stout, 17–53 × 6–8 mm, flowering branchlet 1–3 mm;

floral bract brown, 1.2–2.2 mm, apex rounded, abaxially hairy, hairs straight.

staminate 27–81 × 9–13 mm, flowering branchlet 9–21 mm; pistillate moderately to densely flowered, slender or stout, 29–68 × 7–15 mm, flowering branchlet 9–42 mm;

floral bract 2–4 mm, apex acute or rounded to truncate, entire or toothed, abaxially sparsely hairy (mainly proximally), hairs wavy or straight.

= 76.