ris-like herbs 1.5-4.0 dm. tall, not greatly discoloring, but yielding a purplish dye in drying; roots slender and fibrous; leaves all basal, lance-ensiform, 7-25 cm. long, 0.3-1.0 cm. broad; flowering scapes simple, leafless, 15-30 cm. long, very broadly ancipitous and leaf-like; inflorescence simple, 2-to 4-flowered; spathe valves very unequal, the outer leaf-like, 3-6 cm. long; perianth 0.7-0.8 cm. long, yellow veined with brown, glabrous; stamen filaments 0.4 cm. long, free to the base; capsules broadly turbinate, 0.9-1.2 cm. long; seeds about 0.15 cm. in diameter, obscurely foveolate.
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