Flora of North America species comparison

stipules sometimes marcescent, foliaceous (sometimes obscured by hairs) on early ones, foliaceous and prominent on late ones, linear to narrowly elliptic, 2–17 mm, apex acute to caudate;

petiole 1–9 mm, villous adaxially;

largest medial blade (hemiamphistomatous), sometimes narrowly oblong, 27–74 × 8–24 mm, 2.1–3.9 times as long as wide, base rounded, apex acuminate, convex, or acute, abaxial surface densely villous or villous-silky, hairs straight or wavy, adaxial moderately densely villous, or long-silky to glabrescent;

proximal blade margins entire;

juvenile blade densely villous or long-silky.

abaxial nectary 0.3–1 mm;

filaments distinct or partly connate, glabrous, or hairy on proximal 1/2.

adaxial nectary sometimes flask-shaped, (0.4–)0.6–1.8 mm;

stipe 0.4–1.8 mm;

ovary obclavate or pyriform, very densely villous or tomentose, beak abruptly tapering to styles;

ovules 10–20 per ovary;

styles connate to distinct, 0.4–1 mm;

stigmas slenderly cylindrical, 0.3–0.8 mm.

4.5–7.5 mm.

staminate 14–26 × 8–14 mm, flowering branchlet 1–14 mm;

pistillate stout or subglobose, 15–54 × 7–15 mm, flowering branchlet 2–19 mm;

floral bract tawny, light brown or bicolor, 1.2–2.2 mm, apex convex, hairs straight, wavy, or crinkled.

= 76, 114, 152.