Description
Key Characters:
Growth Form:
Twining or sprawling herbs.
Stems:
Roots:
Leaves:
Leaves compound.
Alternate.
Leaflets ovate, the terminal one usually 3–lobed, the lateral ones similarly 2(3)–lobed; Leaflets 8–20 cm long, 5–19 cm wide.
Apex acuminate.
Petiolate.
Stipules present 2–2.5 cm long, produced above and below the point of insertion.
Flowers:
Flowers in clusters, on axillary pseudoracemes 10–40 cm long with a thickened axis, bracts small caducous.
Flowers papilionaceous.
Corolla blue or purple to pink, standard with a yellow central patch, 15–25 mm long, keel darker in color, standard with inflexed auricles.
Ovary superior, subsessile; ovules numerous; style terete (cylindrical), filiform; stigma capitate, terminal.
Fruit:
Pods 4–13 cm long; 0.6–1.3 cm wide; dehiscent; villous; spirally curling valves.
Seeds (5–)10–15; reddish brown with black mosaic; ovoid to ellipsoid; slightly laterally flattened; 4–5 mm long; ca. 4 mm wide; compressed; the hilum small; central.
Ploidy:
2n = 22; 24
Habitat:
Low elevation disturbed areas.
Elevation Range:
up to 700 m.