Flora of North America species comparison

branches yellow-brown or yellow-gray, not or weakly glaucous, (with sparkling wax crystals, dull or slightly glossy), pilose or villous;

branchlets gray-brown or red-brown, pubescent, villous, or velvety.

stipules foliaceous, rudimentary, or absent on early ones, foliaceous on late ones, apex acute;

petiole convex to flat, or shallowly grooved adaxially, 4–9 mm, pilose adaxially;

largest medial blade (sometimes amphistomatous), lorate, narrowly oblong, narrowly elliptic, or oblanceolate, 35–95 × 7.5–20 mm, 3.4–7.1 times as long as wide, base cuneate or convex, margins flat or slightly revolute, entire, apex acute, acuminate, or convex, abaxial surface glaucous (sometimes obscured by hairs), sparsely to moderately densely long- to short-silky or pubescent, hairs (white, sometimes also ferruginous), straight or wavy, adaxial dull or slightly glossy, sparsely or moderately densely pubescent or long- to short-silky, (hairs white, sometimes also ferruginous);

proximal blade margins entire or serrulate;

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

stipules foliaceous, apex acute or convex;

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

largest medial blade (amphistomatous), narrowly oblong, narrowly elliptic, elliptic, oblanceolate, or lanceolate, 26–47 × 7.5–15 mm, 2.8–4.1 times as long as wide, base convex, rounded, or subcordate, margins slightly revolute or flat, serrate or serrulate, apex acuminate to acute, abaxial surface glaucous, glabrous, pilose, villous, or long-silky, hairs straight or wavy, adaxial dull, sparsely or moderately densely pilose or long-silky, especially on midrib;

proximal blade margins entire or serrulate;

juvenile blade reddish or yellowish green, sparsely to moderately densely long-silky or pubescent abaxially, hairs white.

adaxial nectary oblong or ovate, 0.6–1.1 mm;

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

anthers purple turning yellow, 0.6–1 mm.

adaxial nectary narrowly oblong or ovate, 0.7–1.1 mm;

filaments distinct or connate, hairy basally;

anthers yellow, 0.6–0.8 mm.

adaxial nectary oblong or flask-shaped, 0.7–1.3 mm, shorter than or equal to stipe;

stipe 0.8–2 mm;

ovary obclavate or pyriform, short-silky-villous, beak gradually tapering to or slightly bulged below styles;

ovules 15–16 per ovary;

styles 0.6–1 mm;

stigmas flat, abaxially non-papillate with rounded or pointed tip, or broadly cylindrical, 0.24–0.32–0.44 mm.

adaxial nectary oblong, flask-shaped, or narrowly ovate, 0.4–1 mm, shorter than stipe;

stipe 2–4 mm;

ovary pyriform, glabrous, beaks slightly bulged below styles;

ovules 14–18 per ovary;

styles 0.3–0.5 mm;

stigmas flat, abaxially non-papillate with rounded or pointed tip, 0.16–0.23–0.28 mm.

5–10 mm.

2.5–5 mm.

flowering as leaves emerge; staminate stout, 15.5–34 × 7–14 mm, flowering branchlet 1–8 mm; pistillate moderately densely flowered, stout, 20–55(–65 in fruit) × 11–13 mm, flowering branchlet 2–15 mm;

floral bract dark brown or bicolor, 1.2–2.5 mm, apex acute or rounded, abaxially hairy, hairs straight or wavy.

flowering just before or as leaves emerge; staminate stout, 16–30 × 8–10 mm, flowering branchlet 1.5–4 mm; pistillate loosely flowered, stout, 18–22 × 9–11 mm, flowering branchlet 3–4 mm;

floral bract brown or tawny, 1.2–1.6 mm, apex acute or rounded, abaxially hairy throughout or proximally, hairs straight or wavy.