Flora of North America species comparison

petiole length 1/6–1/3 blade;

blade ovate to lanceolate, 9–15(–20) cm, length 1.5–3 times width, base truncate to slightly rounded, margins serrate to dentate.

petiole length 1/3–1/2 blade;

blade deltate or ovate to lanceolate, 8–17 cm, length 1.5–3 times width, base cordate to truncate, sometimes cuneate, margins serrate or dentate, sometimes incised.

moderately stout, glabrate or stipitate-glandular.

slender to moderately stout, glabrate or stipitate-glandular.

corolla brown-red to green, unicolored or ± bicolored, paler abaxially, 8–11(–14) mm, throat relatively open;

staminode yellow-green, sometimes green to brown-red, flabellate, length less than width.

corolla red, brown-red, or green, unicolored or ± bicolored, paler abaxially, 8–12 mm, throat narrow to open;

staminode red, brown-red, or green, clavate to obovate, length greater than width, apex sometimes acute.

= 96.

= ca. 90–96.