Flora of North America species comparison

erect;

branches gray-brown, glabrous;

branchlets yellow-brown, glabrous.

stipules (early deciduous), foliaceous or rudimentary on early ones, foliaceous on late ones, apex acute, convex, or rounded;

petiole convex to flat, or shallowly grooved adaxially, 7–20 mm, glabrous or sparsely velvety adaxially;

largest medial blade narrowly oblong, oblong, elliptic, or broadly elliptic, 30–103 × 19–40 mm, 1.5–3.4 times as long as wide, base cordate, subcordate, rounded or convex, margins flat or slightly revolute, serrulate, irregularly serrate, crenate, or sinuate, apex acute or acuminate, abaxial surface glaucous, glabrous, adaxial slightly or highly glossy, glabrous;

proximal blade margins serrulate or entire;

juvenile blade translucent, glabrous or pilose abaxially, hairs white.

stipules foliaceous;

petiole 5–9 mm;

largest medial blade narrowly elliptic, 32–58 × 12–19 mm, 2–3.3 times as long as wide, base cuneate or convex, margins slightly revolute, entire, apex acute to acuminate, abaxial surface glabrous, adaxial slightly glossy, glabrous;

proximal blade margins shallowly serrulate;

juvenile blade glabrous.

adaxial nectary square or ovate, 0.3–0.5 mm;

filaments distinct, glabrous or sparsely hairy basally;

anthers yellow, (ellipsoid or shortly cylindrical), 0.5–0.8 mm.

abaxial nectary 0.3–0.8 mm, adaxial nectary narrowly oblong, 0.6–1 mm, nectaries distinct;

filaments distinct, glabrous;

anthers ellipsoid, shortly cylindrical, or globose, 0.4–0.7 mm.

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

stipe 1.8–3.5 mm;

ovary obclavate, glabrous, beak slightly bulged below styles;

ovules 10–19 per ovary;

styles 0.4–0.5 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.2–0.23–0.32 mm.

abaxial nectary absent, adaxial nectary narrowly oblong or oblong, 0.5–1.1 mm, equal to or longer than stipe;

stipe 0.4–1.2 mm;

ovary pyriform, usually glabrous, rarely puberulent, beak slightly bulged below styles;

ovules 12 per ovary;

styles 0.6–0.8 mm;

stigmas flat, abaxially not papillate with rounded tip, or broadly cylindrical, 0.3–0.5 mm.

7–8 mm.

4.4–8 mm.

staminate flowering just before leaves emerge, pistillate flowering as leaves emerge; staminate stout or slender, 18.5–63 × 7–15 mm, flowering branchlet 1–5 mm; pistillate loosely flowered, stout or slender, 25–85 × 8–20 mm, flowering branchlet 2–22 mm;

floral bract tawny, 1–2.4 mm, apex acute or convex, abaxially sparsely to moderately densely hairy, hairs straight or wavy.

staminate 17.5–42 × 5–13 mm, flowering branchlet 6–7 mm; pistillate moderately densely flowered, stout, 20–40 × 6–12 mm, flowering branchlet 4–7 mm;

floral bract tawny or bicolor, 1.3–2.5 mm, apex rounded, entire, abaxially glabrous.

= 38.