Flora of North America species comparison

basal;

petiole flattened, 1–9 cm;

blade ovate to elliptic, 2–8 cm, slightly fleshy, base attenuate, margins entire or subentire, ciliate, surfaces tangled, reddish brown-hairy.

basal;

petiole rounded, 2–30 cm;

blade round, 7–40 cm, thin to slightly fleshy, base cordate to truncate, margins regularly dentate, eciliate, surfaces sparsely brownish hairy abaxially, glabrous adaxially.

30+-flowered, (flowers sometimes almost secund), very open, lax thyrses, 6–50 cm, hairy proximally, densely so distally.

10–30+-flowered, open, lax, flat-topped thyrses, 20–65(–85) cm, glabrous proximally, purple-tipped subsessile-glandular distally.

sepals erect to ascending, ovate to triangular;

petals white, not spotted, broadly oblong to elliptic, not clawed, 3–6 mm, 2+ times as long as sepals;

filaments linear, flattened;

pistils distinct almost to base;

ovary ± superior, (to 1/3 adnate to hypanthium).

sepals reflexed, ovate to elliptic;

petals white, each with 2 basal yellow spots, round to broadly elliptic, clawed, 3–4.5 mm, longer than sepals;

filaments strongly club-shaped, (to 6 mm);

pistils connate ca. 1/2 their lengths;

ovary superior.

green with reddish or purplish tinge, or reddish purple, folliclelike.

green to purple, ± folliclelike.

= 24, 48.