Flora of North America species comparison

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, rudimentary or foliaceous on late ones (apex acute);

petiole 1–6 mm, long-silky adaxially;

largest medial blade (sometimes hypostomatous, glands submarginal), linear, lorate, narrowly elliptic, or narrowly oblanceolate, 40–120 × 7.5–16 mm, 3–8.5 times as long as wide, base cuneate or convex, margins flat, remotely spinulose-serrulate, apex acuminate, acute, or caudate, abaxial surface not glaucous, densely to sparsely long- or short-silky or villous, hairs appressed or spreading, straight or wavy, adaxial dull, sparsely long-silky or villous;

proximal blade margins entire;

juvenile blade yellowish green, very densely long-silky or villous abaxially.

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 0.4–1 mm, adaxial nectary narrowly oblong, oblong, or flask-shaped, 0.5–1.1 mm, nectaries distinct;

filaments hairy on proximal 1/2;

anthers 0.8–1.2 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, square, ovate, or flask-shaped, 0.6–1 mm, longer than stipe;

stipe 0.2–0.7 mm;

ovary pyriform, villous or long-silky, beak abruptly tapering to styles;

ovules 24–36 per ovary;

styles 0.1–0.7 mm;

stigmas flat, abaxially non-papillate with pointed tip, or slenderly cylindrical, 0.4–1 mm.

5–10 mm.

4–5.5 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.

staminate 38–45 × 6–7 mm, flowering branchlet 25–45 mm; pistillate densely flowered, slender, 40–73 × 6–7 mm, flowering branchlet 20–32 mm;

floral bract (sometimes brown), 2.4–3.2 mm, apex acute or rounded, entire or irregularly toothed, abaxially hairy, hairs wavy.