Caudex 20 cm high (!Irwin. “Herb to ca. 20 cm. tall.”), over 12 mm thick including leaf-bases. Leaves 3-ranked, sulcate on both sides; sheaths slightly exposed at apex; blades linear, evenly attenuate, 22 cm long, 5 mm wide at base, ciliate with erect or suberect setae, otherwise glabrous.
Scapes solitary, 15 cm long above the leaf-sheaths, laxly pale-pilose. Flowers white (!Irwin et al.), laxly pale-pilose. Ovary slenderly ellipsoid, slightly wider than the upper perianth-tube, ca. 20 mm long. Perianth-tube (whole) 45-60 mm long, slenderly cylindric above the ovary, 4-5 mm wide. Tepals nearly uniform, narrowly oblong, 25-30 mm long, the inner nearly glabrous. Anthers erect, 13 mm long, attached near their base and near the apex of the appendage; coronoid appendages subtriangular, obtuse, unlobed, 12 mm long. Style exceeding the anthers, ellipsoid-enlarged at apex with 3 oblong apically confluent stigmas.