Flora of North America species comparison

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 (usually marcescent), foliaceous, (linear or lanceolate, 2–9.8–23 mm), apex acuminate;

petiole convex to flat adaxially, 2.8–10(–15) mm, glabrous or puberulent adaxially;

largest medial blade narrowly elliptic, elliptic, or obovate, 22–75 × 8–26 mm, 1.7–4.7 times as long as wide, base cuneate, margins flat to slightly revolute, entire, crenate, or serrulate, apex acuminate, acute, or convex, abaxial surface glaucous, glabrous or pubescent, midrib pilose, hairs (white, sometimes also ferruginous), straight, adaxial highly to slightly glossy, midrib glabrous or sparsely pubescent;

proximal blade margins entire;

juvenile blade green, glabrous or pubescent abaxially, hairs white, sometimes also ferruginous.

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 narrowly oblong to oblong, 0.6–1 mm;

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

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.4–0.8 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 narrowly oblong to oblong, 0.4–1.6 mm, longer than stipe;

stipe 0.2–0.8 mm;

ovary pyriform, long-silky, beak slightly bulged below styles;

ovules 12–16 per ovary;

styles 1–1.8 mm;

stigmas slenderly cylindrical, 0.44–0.63–0.96 mm.

3.2–8 mm.

3.2–5.6 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 before leaves emerge; staminate stout or subglobose, 21–53 × 12–19 mm, flowering branchlet 0–3 mm; pistillate densely flowered, slender to stout, 27–82 × 8–20 mm, flowering branchlet 0–3(–8) mm;

floral bract brown or black, 1.6–2.8 mm, apex acute or rounded, abaxially hairy distally, hairs straight.

= 38.

= 76.