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.

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 rudimentary or foliaceous on early ones, foliaceous on late ones, apex acute or rounded;

petiole convex to flat, or shallowly grooved adaxially, 3–27 mm, puberulent, pubescent, tomentose, velvety, or glabrous adaxially;

largest medial blade (sometimes hemiamphistomatous), narrowly oblong, narrowly elliptic, or lanceolate, 28–116 × 10–30 mm, 2.6–3.5–7 times as long as wide, base subcordate, convex, or rounded, margins flat or slightly revolute, serrate, shallowly serrulate or crenulate, apex acuminate to acute, abaxial surface glabrous, pilose, or pubescent, midribs hairy, adaxial dull or slightly glossy, glabrous, pilose, sparsely long-silky, or tomentose, midribs hairy;

proximal blade margins entire or shallowly serrulate;

juvenile blade reddish or yellowish green, glabrous, pilose, or villous abaxially, hairs white.

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.

adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.8–1 mm;

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

anthers yellow or purple turning yellow, (ellipsoid), 0.5–0.7 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 0.6–0.8 mm, shorter than stipe;

stipe 0.7–2.4(–2.75) mm;

ovary pyriform or obclavate, glabrous, beak sometimes slightly bulged below styles;

ovules 12–18 per ovary;

styles 0.2–0.6 mm;

stigmas flat, abaxially non-papillate with rounded tip, or 2 plump lobes, 0.12–0.22–0.32 mm.

4–6 mm.

5–6 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.

staminate flowering before or just before leaves emerge, pistillate as leaves emerge; staminate slender, stout, or subglobose, 15–44 × 8–14 mm, flowering branchlet 0.5–4 mm; pistillate loosely or moderately densely flowered, slender or stout, 16–74(–115 in fruit) × 7–15 mm, flowering branchlet 0.5–9 mm;

floral bract dark brown or tawny, 0.8–1.6 mm, apex rounded or convex, abaxially hairy throughout or proximally, hairs straight or wavy.

= 38.