Plants rather slender, climbing, glabrous throughout. Leaves long-petiolate, simple, basifixed, broadly 3-lobed, the lobes ascending, acute, and essentially equal, broadly rounded at the base, 5-12 cm. long and broad, conspicuously glandular-ocellate; petioles 1.5-3.0 cm. long, eglandular; stipules inconspicuous and sub-setaceous. Inflorescences bearing solitary greenish lavender-tinged flowers upon paired peduncles, the associated tendril basal; peduncles 2-4 cm. long, jointed almost immediately beneath the flower; bracts minute, subsetaceous. Flowers about 3 cm. in diameter; sepals oblong-lanceolate, 1.0-1.5 cm. long; petals oblanceolate, about half as long as the sepals; filaments of the corona in 2 series, the outer about as long as the petals. Fruit globose, about 2 cm. in diameter, purple.
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