Flora of North America species comparison

glabrous.

glabrous or sparsely hairy.

twining-climbing.

trailing or twining-climbing.

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

blade oblong, oblong-ovate, orbiculate, or ovate, 45–122 × 30–96 mm, base cordate and lobes rounded or base cuneate to ± truncate.

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

(1–)2–3(–4) mm distant from sepals, narrowly elliptic to oblanceolate, 5–14 × 1–2.5(–3.5) mm, shorter than or equal to sepals, proximally flat, margins entire.

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 lance-ovate to narrowly oblong, outers 8–11 × 2.5–5 mm, inners 11–15 × 3.5–4 mm;

corolla white with yellow or purplish stripes, 27–45 mm.