Flora of North America species comparison

branches red-brown, pubescent to glabrescent;

branchlets yellow-brown or red-brown, sparsely velvety or pubescent.

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

petiole (shallowly grooved adaxially), 13–20 mm, puberulent or velvety adaxially;

largest medial blade narrowly oblong, oblong, lanceolate, or narrowly ovate, 100–170 × 38–55 mm, 2.5–3(–4) times as long as wide, base rounded, convex, or subcordate (cordate on larger leaves), margins serrulate or spinulose-serrulate, apex acute, acuminate, or convex, abaxial surface sparsely tomentose, hairs straight, adaxial highly glossy, sparsely villous or pilose to glabrescent (midrib remaining villous), hairs white and ferruginous;

proximal blade margins entire;

juvenile blade sparsely pubescent to very densely villous or pilose 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.

abaxial nectary 0.4–0.8 mm, adaxial nectary ovate, 0.5–1.1 mm, nectaries distinct or connate and cup-shaped;

stamens 3–7;

filaments hairy basally;

anthers 0.4–0.5 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 square, 0.5–0.9 mm;

stipe 3.2–5.6 mm;

ovary obclavate to ellipsoidal, (rarely puberulent), beak gradually tapering to styles;

ovules 4 per ovary;

styles 0.3–0.4 mm;

stigmas 0.16–0.17–0.2 mm.

5–10 mm.

6–7 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.

staminate 29–72 × 12–15 mm, flowering branchlet 1–10 mm; pistillate 50–81 × 17–27 mm, flowering branchlet 5–30 mm;

floral bract (tawny, sometimes greenish), 2–3.6 mm, apex rounded, entire, abaxially sparsely hairy, hairs wavy; pistillate bract persistent after flowering.

= 38.