prostrate, herbaceous: stem and petioles retrorsely hispid; leaflets hastate, 3-lobed, the middle lobe acute, lateral short, obtuse, lateral leaflets unequal-sided, obsoletely lobed; stipules sessile, lanceolate, small; peduncles equalling or exceeding the leaves, 2-flowered at the summit; calyx campanulate, its lobes from a broad base subulate, equalling the tube; carina falcate, subacute; legume straight, somewhat constricted between the seeds. Very like V. triloba, but the stipules are basifixed, not peltate, the flowers are smaller and the calyx different. Stems flagelliform, 2 feet long or more, striate, and rather roughly hispid. Petioles uncial. Stipellæ lanceolate, equalling the petiolules. Leaflets about 1–1 1/2 inch long, 1/2– 3/4 inch wide, green, subglabrous, except on the ribs, veins, and margin, the middle lobe mostly acute. Flowers 6 lines long, seemingly greenish-rosy. Young pods only seen.
