Flora of North America species comparison

stipules sometimes marcescent, rudimentary or foliaceous on early ones, foliaceous on late ones, usually inconspicuous, narrowly elliptic to ovate, 0.9–2.8–8 mm, apex acute;

petiole 3–14 mm, villous or pilose adaxially;

largest medial blade (often amphistomatous), narrowly elliptic, elliptic, oblanceolate, or obovate, 29–80 × 8–24 mm, 2.2–3.9 times as long as wide, base sometimes rounded, apex acuminate, acute, or convex, abaxial surface pilose or moderately densely villous to glabrescent, hairs wavy, adaxial pilose or moderately densely villous to glabrescent;

proximal blade margins entire or serrulate;

juvenile blade sparsely to densely villous.

stipules marcescent, rudimentary or foliaceous on early ones, foliaceous on late ones, usually prominent, linear to lanceolate, 2–17 mm, apex acuminate;

petiole 4–27 mm, pilose adaxially;

largest medial blade oblanceolate or obovate to narrowly elliptic, 43–82 × 12–39 mm, 2.2–4.8 times as long as wide, base cuneate or convex, apex acuminate or convex, abaxial surface very densely to sparsely villous-tomentose or short-silky, hairs straight, wavy, or curved, adaxial long-silky or pilose to glabrescent;

proximal blade margins entire;

juvenile blade densely villous or long-silky.

:abaxial nectary 0.1–0.8 mm, adaxial nectary oblong or ovate, 0.6–1.3 mm, filaments distinct, glabrous, or hairy on proximal 1/2.

abaxial nectary 0.1–0.6 mm, adaxial nectary narrowly oblong, oblong, or square, 0.6–0.9 mm;

filaments distinct, glabrous.

adaxial nectary sometimes flask-shaped, 0.6–1.4 mm;, stipe 0.3–1.5 mm, ovary pyriform, densely villous or tomentose, beak gradually tapering to or slightly bulged below styles, ovules 6–15 per ovary, styles connate to distinct 1/2 their lengths, 0.4–1.4 mm, stigmas flat, abaxially non-papillate with rounded tip, or slenderly to broadly cylindrical, 0.2–0.4–0.64 mm.

adaxial nectary sometimes flask-shaped;

stipe 0.5–2.8 mm;

ovary obclavate or pyriform, densely tomentose, short-silky, or pubescent, beak gradually tapering to styles;

ovules 12–22 per ovary;

styles connate to distinct 1/2 their lengths, 0.3–1.4 mm;

stigmas slenderly to broadly cylindrical, 0.4–0.59–0.8 mm.

5–8 mm.

5–9 mm.

staminate 19–53 × 9–14 mm, flowering branchlet 1.5–20 mm;

pistillate slender to stout, 19–56(–60 in fruit) × 7–18 mm, flowering branchlet 2–27 mm;

floral bract tawny, greenish, brown, or bicolor, 1–3.4 mm, apex convex to rounded, hairs wavy.

staminate 19–45 × 9–17 mm, flowering branchlet 2–9 mm;

pistillate slender to stout, 24–83 × 8–17 mm, flowering branchlet 3–37 mm;

floral bract tawny, light brown, or bicolor, 1.5–2.5 mm, apex convex to rounded, hairs wavy.

= 114.

= 76, 95, 114.