Vines. Root tuberous. Stems striate. Petiole ca. 4 cm; leaf blade deltoid, length subequal to width, ca. 4.5 cm long and wide, abaxially grayish green, adaxially green, abaxially sparsely whitish puberulent. Inflorescences simple umbelliform cymes; peduncle short, 0.5-1.5 cm, very few flowered; bracts 2 or 3, 1.8-2.2 mm. Male flowers: sepals 3, purple, rounded, less than 0.5 mm in diam.; petals 3, spatulate, alternate to sepals, very shortly sessile. Female flowers unknown. Fruit unknown. Fl. early summer.
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