Flora of North America species comparison

glabrous.

tomentellous, tomentose, or villous.

twining-climbing.

ascending-decumbent, to 50 cm, sometimes almost absent.

blade ± cordate, to 50–120 mm, base rounded or lobed, lobes rounded or 1-pointed, basal sinus ± quadrate to rounded.

in basal rosettes;

blade usually triangular, sometimes notably 3-lobed, to 40 mm, base ± lobed, lobes oblong to triangular, 1–3-pointed, margins ± undulate or not, apex rounded to acute.

immediately subtending sepals, lanceolate, to 30 × 15–35 mm, proximally saccate, margins strongly enfolding sepals, apex obtuse to truncate.

immediately subtending sepals, lanceolate, linear-elliptic, or ovate, 5–17 × 1.5–14 mm.

sepals oval to ovate, 15–23 mm;

corolla white, sometimes pinkish-striped, rarely otherwise pink-tinged, 43–70[–88] mm;

stamens 23–40 mm;

anthers 4–6.5 mm.

sepals 8–13 mm;

corolla white, (25–)27–50(–55) mm.