Flora of North America species comparison

branches gray-brown to red-brown, not glaucous, glabrous;

branchlets red-brown, glabrous or puberulent.

branches dark gray-brown to yellow-brown, not glaucous, woolly in patches or floccose to glabrescent;

branchlets yellow-brown to red-brown or gray-brown, densely (white) woolly or tomentose, sometimes floccose.

stipules rudimentary on early ones, apex acute;

petiole shallowly grooved adaxially, 3–11 mm, puberulent to glabrescent adaxially;

largest medial blade very narrowly elliptic to elliptic, 38–78 × 7–18 mm, base cuneate or convex, margins slightly revolute, serrulate, apex acuminate, acute, or convex, abaxial surface glaucous (sometimes obscured by hairs), sparsely to densely long-silky, hairs (white, sometimes also ferruginous), straight, adaxial highly or slightly glossy, glabrous;

proximal blade margins entire;

juvenile blade yellowish green, very densely long-silky abaxially, hairs white, sometimes also ferruginous.

stipules rudimentary or foliaceous on early ones, late ones 2–3.6 mm, apex acute;

petiole shallowly to deeply grooved adaxially, 3–10 mm, tomentose or densely (white) woolly adaxially (obscured by hairs);

largest medial blade lorate, narrowly elliptic or oblanceolate, 47–103 × 5–20 mm, base convex or cuneate, margins strongly to slightly revolute, entire, or sinuate, apex acute or convex, abaxial surface glaucous (generally obscured by hairs), very densely to sparsely tomentose-woolly (cobwebby in age), hairs dull white, crinkled, adaxial dull or slightly glossy, moderately densely to sparsely tomentose, floccose, hairs dull white;

proximal blade margins entire;

juvenile blade yellowish green, very densely tomentose abaxially, hairs white.

adaxial nectary oblong, 0.6–0.9 mm;

filaments distinct;

anthers purple turning yellow, ellipsoid to globose, 0.3–0.6 mm.

adaxial nectary narrowly oblong to oblong, 0.6–1 mm;

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

anthers purple turning yellow, ellipsoid, long-cylindrical, or globose, 0.4–0.6 mm.

adaxial nectary oblong or ovate, 0.6–1 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 16–18 per ovary;

styles 0.3–0.5 mm.

adaxial nectary oblong, 0.4–1 mm;

ovary pyriform, beak sometimes slightly bulged below styles;

ovules 12–18 per ovary;

styles 0.3–1.9 mm.

4–6 mm.

4–6 mm.

flowering as or just before leaves emerge; staminate stout or slender, 17–43 × 5–10 mm, flowering branchlet 0–2.5 mm; pistillate densely to loosely flowered, stout to slender, 20–46 × 6–15 mm, flowering branchlet 0–6 mm;

floral bract tawny or brown, 0.8–1.2 mm, apex convex to rounded, abaxially hairy, hairs straight or wavy.

flowering as leaves emerge; staminate stout or subglobose, 17–39 × 8–16 mm, flowering branchlet 0.5–7 mm; pistillate densely to moderately densely flowered, stout or slender, 20–66 × 9–18 mm, flowering branchlet 1–24 mm;

floral bract tawny or brown, 1.2–1.8 mm, apex rounded or acute, abaxially hairy, hairs straight to wavy.

= 38.

= 38.