Flora of North America species comparison

glabrous.

glabrous.

twining-climbing.

ascending-decumbent, erect, suberect, or trailing, to 10–50 cm or almost absent.

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

blade rounded-deltate or triangular-hastate, 20–40(–60) mm wide, base cuneate or lobed, lobes at right angles to midrib or slightly retrorse, apex acute to obtuse.

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

immediately subtending sepals, elliptic, ovate, or suborbiculate, 8–19 × 3–18 mm, proximally flat or saccate, scarcely to closely enfolding sepals, apex acute, emarginate, obtuse, or rounded.

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 10–15 mm;

corolla white, sometimes pink or purple-striped, 31–73 mm.