Herbs perennial. Leaves forming a rosette; petiole ca. 1/2 as long as to nearly as long as leaf blade, narrowly winged; leaf blade elliptic, 1--5(--7) X 0.5--2(--3) cm, narrowly oblong to lanceolate, initially sparsely minutely glandular, becoming glabrous, base attenuate, margin regularly crenate-denticulate, apex rounded to obtuse. Scapes 10--45 cm, glandular near apex; umbels 1 or 2, superimposed, (2--)5--15-flowered; bracts linear-lanceolate, 4--7 mm, base slightly gibbous. Pedicel 1--5 cm, glandular. Flowers heterostylous. Calyx campanulate, 3.5--5.5 mm, glandular outside, parted to middle; lobes narrowly triangular, glandular ciliolate. Corolla pale lilac to lavender-purple; tube 0.9--1.2 cm; limb 1--1.5 cm wide; lobes obovate, deeply emarginate. Pin flowers: stamens at middle of corolla tube; style slightly exserted. Thrum flowers: stamens just below annulus; style ca. as long as calyx. Capsule oblong, slightly longer than calyx. Fl. May-Jul.
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