Flora of North America species comparison

procumbent, not twining, herbaceous to lignescent, hirsute-villous, hairs irregularly to strongly deflexed, rarely nearly appressed-retrorse.

climbing-twining, herbaceous, moderately to densely hirsute to hirsute-villous with spreading-deflexed hairs.

3, blades elliptic, 10–30 × 5–16 mm, herbaceous, veins not raised, apex rounded to obtuse, surfaces glossy, glaucous, and sparsely short-strigose abaxially with appressed to ascending hairs, strigose to glabrescent or glabrate adaxially.

3, blades elliptic to broadly elliptic, oblong-elliptic, or lanceolate-elliptic, (10–)14–40(–50) × (5–)10–21(–25) mm, herbaceous, veins not raised, apex obtuse to rounded, surfaces sparsely strigose abaxially (often glaucous), minutely and sparsely short-strigose adaxially.

flowers solitary and axillary or 2–6 in reduced pseudoracemes;

axis 10–20 mm.

flowers solitary and axillary or 2–7(–9) in reduced pseudoracemes on distal 1/2–3/4 of axis;

axis 10–70(–150) mm.

calyx 3–4 mm, closely strigulose, lobes greenish yellow to tan on inner surface when dry;

corolla not persisting after anthesis, light purple, lighter when dry, 6–7 mm.

calyx 4–6 mm, hirsute-villous;

corolla pink to rose, light violet, pink-purple, or rose-purple, 7–10 mm.

straight, 25–45 × 4–5 mm, short-hirsute, hairs spreading.

straight, 20–50 × 3–5 mm, loosely strigose.

3–8.

5–9.