Perennial herb, 150-300 mm tall. Leaves 6-7 times as long as broad, lanceolate with truncate to cuneate-hastate base. Umbels solitary and terminal or 2, the lower lateral, 12-15-flowered. Peduncles 50-120 mm long. Corolla lobes reflexed with upcurved tips, glabrous. Flowers white tinted with purple on back; corona greenish yellow at top, dark violet-brown on back and lower part.