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 or semi-prostrate;

branches gray-brown or red-brown, glabrous or woolly to glabrescent;

branchlets reddish, densely woolly (hairs spreading).

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 or rudimentary;

petiole (shallowly grooved adaxially), 0–3 mm;

largest medial blade narrowly oblong, narrowly elliptic, elliptic, oblanceolate, or obovate, 25–87 × 10–30 mm, 2–3.9 times as long as wide, base cuneate or convex, margins flat, entire or serrulate, apex rounded to convex, abaxial surface glabrous, adaxial dull, glabrous;

proximal blade margins entire or serrulate;

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 0.4–0.8 mm, adaxial nectary narrowly oblong, oblong, or ovate, 0.6–1 mm, nectaries distinct, or connate and shallowly cup-shaped;

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

anthers long-cylindrical, 0.6–0.8 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.

adaxial nectary oblong, 0.8–1.3 mm, equal to or longer than stipe;

stipe 0–0.6 mm;

ovary obclavate or ovoid, beak abruptly tapering to styles;

ovules 16–23 per ovary;

styles distinct, 0.3–0.4 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly cylindrical, 0.32–0.47–0.6 mm.

4–6 mm.

3.6–10 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.

(sometimes branched); staminate 12–27 × 6–10 mm, flowering branchlet 3–8 mm; pistillate densely flowered, stout or subglobose, 20–34 × 6–13 mm, flowering branchlet 5–19 mm;

floral bract tawny or greenish, translucent, 2–3.6 mm, apex rounded or truncate, erose, sinuate, irregularly toothed, or entire, abaxially glabrous.

= 38.

= 38.