Flora of North America species comparison

branches red-brown, strongly glaucous (losing glaucescence in age but remaining so at nodes), glabrescent;

branchlets yellow-brown, (not glaucous, except in age), usually glabrescent, sometimes sparsely or moderately densely tomentose.

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 (often adnate to petioles), usually rudimentary on early ones, late ones lanceolate to ovate, apex acuminate or acute, often adnate to petiole;

petiole shallowly grooved, or convex to flat adaxially, 5–18 mm, tomentose to glabrescent adaxially;

largest medial blade oblong, lorate, narrowly elliptic, or elliptic, 50–96(–120) × 1–35(–40) mm, base cuneate to concave, margins slightly revolute, serrate to crenate, apex acuminate, abaxial surface glaucous, glabrescent or midrib sparsely tomentose, hairs (white, sometimes also ferruginous), spreading, straight, long or short, adaxial slightly glossy, (midrib sparsely tomentose or throughout);

proximal blade margins entire, closely gland-dotted;

juvenile leaves green, sparsely to moderately densely long-silky abaxially, hairs white, sometimes some 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 flask-shaped, 0.5–1 mm;

filaments distinct or connate basally;

anthers purple turning yellow, short- to long-cylindrical or ellipsoid, 0.5–0.7 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 oblong to square, 0.4–0.9 mm;

ovary pyriform, beak gradually tapering to styles;

ovules 4–6 per ovary;

styles 0.6–1.5 mm.

3.2–8 mm.

3.2–4.4 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 or just before leaves emerge; staminate stout, 30–47 × 9–20 mm, flowering branchlet 0–1.2 mm; pistillate densely flowered, stout, 20–50 mm, flowering branchlet ca. 1.5 mm;

floral bract dark brown or bicolor, 2.8–3 mm, apex acute to convex, moderately densely hairy throughout, hairs straight.

= 38.

= 38.