Flora of Bhutan

V. umbellata (Thunberg) Ohwi & Ohashi; Phaseolus calcaratus Roxb. Stems twining, ± glabrous. Leaflets ovate, 4—8x2.5—5cm, acuminate, base cuneate or rounded, margin entire or shallowly lobed, stipels linear-lanceolate 3—4mm; petioles 5—9cm; stipules