Flora of North America species comparison

branches yellow-brown, gray-brown, or yellowish, not glaucous, glabrous or puberulent;

branchlets yellow-brown or yellowish (sometimes color obscured by hairs), glabrous, densely to sparsely villous, velvety, or puberulent.

erect;

branches red-brown to violet, (sometimes weakly glaucous), glabrous;

branchlets yellow-brown or red-brown, glabrous.

stipules (not adnate to petioles), rudimentary or absent on early ones, (late ones sometimes brownish, linear, 5.4–10.4 mm), apex acuminate;

petiole shallowly grooved adaxially, 4–13 mm, villous, puberulent, or velvety adaxially;

largest medial blade linear, lorate, narrowly oblong, or narrowly elliptic, 53–130 × 5–33 mm, base cuneate, margins strongly revolute, sinuate or apparently entire, (glands epilaminal), apex acuminate, acute, or convex, abaxial surface apparently glaucous (obscured by hairs), densely short-silky, woolly, or tomentose, (midribs prominent, yellowish, and hairy), hairs appressed, spreading or erect, straight or wavy, adaxial dull or slightly glossy, sparsely or moderately densely pubescent, hairs gray;

proximal blade margins entire;

juvenile blade yellowish green, very densely tomentose or short-silky abaxially, hairs white.

stipules absent;

petiole (convex or flat to deeply grooved adaxially), 1.5–6(–7) mm;

largest medial blade (2 pairs of secondary veins arising at or close to base, arcing) circular, subcircular or broadly elliptic, 6–21(–34) × 6–17(–31) mm, 0.9–1.4 times as long as wide, base usually subcordate or cordate, sometimes convex or rounded, margins flat, crenulate or crenate, apex rounded, convex, retuse, or toothed, abaxial surface (not glaucous), glabrous, adaxial slightly glossy to almost dull, glabrous;

proximal blade margins crenulate;

juvenile blade glabrous.

adaxial nectary narrowly oblong or oblong, 0.6–1.5 mm;

filaments distinct;

anthers purple turning yellow, ellipsoid to shortly cylindrical, 0.6–0.8 mm.

abaxial nectary 0.5–0.8 mm, adaxial nectary oblong or ovate, 0.6–1.1 mm, nectaries distinct, or connate and shallowly cup-shaped;

filaments distinct, glabrous, or hairy on proximal 1/2;

anthers shortly cylindrical or globose, 0.3–0.6 mm.

adaxial nectary narrowly oblong or oblong, 0.9–1.4 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 12–18 per ovary;

styles 0.6–1.8 mm.

abaxial nectary (0–)0.2–0.3 mm, adaxial nectary narrowly oblong or oblong, 0.3–1.1 mm, longer or shorter than stipe, nectaries distinct or connate and shallowly cup-shaped;

stipe 0.3–1.1 mm;

ovary pyriform or ovoid, glabrous, beak abruptly tapering to styles;

ovules 11–18 per ovary;

styles connate to distinct, 0.2–0.4 mm;

stigmas broadly cylindrical or 2 plump lobes, 0.08–0.24–0.32 mm.

4–6 mm.

2.2–7.5 mm.

flowering just before or as leaves emerge; staminate stout, 24–48 mm, flowering branchlet 0–2 mm; pistillate densely flowered, 23–55 mm, flowering branchlet 0–6 mm;

floral bract brown or tawny, 1.6–2.2 mm, apex convex or rounded, abaxially hairy, hairs straight.

from subterminal buds; staminate 3–7.5 × 1.5–5 mm, flowering branchlet 0.3–2 mm; pistillate loosely flowered (2–11 flowers), stout to globose, 3.3–13 × 2–10 mm, flowering branchlet 0.8–3.5 mm;

floral bract tawny, light rose, or brown, 0.5–1.5 mm, margins ciliate, apex rounded, retuse, or truncate, entire, abaxially glabrous.

= 38.

= 38.