Herbs perennial, lacking basal bud scales at anthesis. Petiole indistinct to slightly longer than leaf blade, narrowly winged; leaf blade ovate-oblong to oblanceolate, 3--12 X 1--4 cm, sparsely minutely glandular, base attenuate to broadly cuneate, margin irregularly sinuate-dentate to lobulate, apex rounded. Scapes 2--10(--14) cm, puberulous, becoming glabrous; umbel solitary, 3--9-flowered; bracts lanceolate to oblong-lanceolate, 4--7 mm, enlarging to 1.1 cm in fruit. Pedicel 0.5--1.5 cm, short-stalked glandular. Flowers heterostylous. Calyx campanulate, 5--8 mm, parted 1/3--1/2, 5-veined; lobes ovate to triangular, apex obtuse. Corolla white, rose, or violet; tube ca. 9.5 mm; limb 1--2 cm wide; lobes obovate, apex 2-cleft; lobules entire to obscurely dentate. Pin flowers: stamens at middle of corolla tube; style slightly exserted. Thrum flowers: stamens toward apex of corolla tube; style ca. 1/2 as long as tube. Capsule disintegrating at maturity. Fl. Mar-Apr.
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