Herbs perennial. Leaves forming a rosette; petiole indistinct to 1/3 as long as leaf blade; leaf blade oblong-oblanceolate to oblanceolate, 7--10 cm at anthesis, enlarging to 20 X 5--6.5 cm at fruiting, tapering to base, efarinose or yellow farinose abaxially, margin regularly fine denticulate, apex rounded. Scapes 20--65 cm; umbels 2--5, superimposed, 5--12-flowered; bracts linear-lanceolate, 4--10 mm. Pedicel ca. 2 X as long as bracts, pale-yellow farinose. Flowers heterostylous. Calyx campanulate, 4--5 mm, copiously yellow farinose outside, parted to 1/3; lobes broadly triangular, apex acute. Corolla pale yellow; tube 8--11 mm; limb 1--1.5 cm wide; lobes obovate to oblong-obovate, ca. 5 X 4--4.5 mm. Pin flowers: stamens ca. 2 mm above base of corolla tube; style 6--7 mm. Thrum flowers: stamens 8--9.5 mm above base of corolla tube; style ca. 2 mm. Capsule globose, slightly longer than calyx. Fl. Jun-Sep. 2n = 22.
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