Flora of North America species comparison

glabrous.

glabrate, glabrous, or 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 linear, ovate, broadly to narrowly triangular, or triangular-hastate, (24–)36–50(–150) mm, base usually lobed, sometimes nearly truncate, lobes usually 1- or 2-pointed, sometimes rounded, basal sinus usually acute to rounded, rarely almost closed.

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

immediately subtending sepals, in subsp. erratica, intergrading with sepals, oblong, oval, or ovate, 12–34 × 5–26(–28) mm, proximally flat or keeled, not or scarcely saccate, margins not or scarcely enfolding sepals, apex acute to subobtuse or truncate.

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 lanceolate, 10–19(–25) mm;

corolla pink or white, (28–)30–70(–80) mm.