Herbs perennial. Rhizomes woody, simple or with 1 or 2 branches, with remains of old foliage at apex. Leaves forming a rosette; petiole 1--8(--10) mm, pubescent; leaf blade elliptic-oblanceolate to oblanceolate, 3--10(--15) X 1--4.2 cm, base cuneate-attenuate, margin repand-crenate, apex subrounded. Leaves of current year thin papery, puberulous, usually efarinose. Leaves of previous year thicker, bullate, abaxially densely yellow farinose. Scapes 4--20 cm, ± yellow farinose toward apex; umbel solitary, 6--15(--20)-flowered; bracts lanceolate, 8--15 X 1--3 mm, leaflike. Pedicel 1--2 cm, yellow farinose. Flowers heterostylous. Calyx tubular-campanulate, 8--10 mm, yellow farinose, parted 1/3--1/2; lobes lanceolate to ovate-oblong, apex acute to obtuse. Corolla deep yellow; tube slightly longer than calyx; limb 1.2--1.8 cm wide; lobes obovate to suborbicular, apex 2-cleft. Pin flowers: stamens 4--5 mm above base of corolla tube; style ca. 9 mm. Thrum flowers: stamens toward apex of corolla tube; style less than 1/2 as long as tube. Capsule subglobose, shorter than calyx. Fl. May-Jun, fr. Jul-Aug.
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