Tuber perennial, 1–1 1/2 in. diam., crowned with copious bristles. Leaves 6–20 to a tuber, lanceolate, erect or falcate, 1/2–1 ft. long, 1/2–1 in. broad low down, narrowed gradually to the point, more or less hairy, especially beneath. Peduncles often 3–4 to a tuber, hairy, shorter than the leaves. Flowers 4–8 in a lax corymb; pedicels very hairy, ascending, 1/2–1 in. long; bracts large, linear-subulate. Perianth-segments yellow, about 1/2 in. long; outer very hairy outside. Stamens half as long as the perianth; anthers sagittate at the base, longer than the filaments. Ovary obconic, densely villous. Capsule turbinate, 1/4– 1/3 in. long, circumscissile round the middle.