Herbs perennial, base with overlapping farinose bud scales appearing bulblike. Petiole initially indistinct, to 1/2 as long as leaf blade at fruiting; leaf blade oblong to obovate-oblong, tapering to base, irregularly lobulate to pinnatifid, not well-developed at anthesis, 3--10(--15) cm, enlarging to 35 X 12 cm; apex rounded to subacute; lobules irregularly denticulate, usually efarinose. Scapes usually ca. as long as leaves at anthesis, elongating to 30 cm in fruit; umbels 3-to many flowered; bracts ovate-triangular to ovate-lanceolate, 2.5--6 mm. Pedicel 0.6--2.5 cm. Flowers heterostylous. Calyx campanulate, 4--6 mm, slightly enlarged, poculiform in fruit, parted to 1/3; lobes ovate to subrectangular, margin entire to dentate, apex obtuse. Corolla lavender-blue to purplish blue, rarely white; limb 1.5--2.5 cm wide. Pin flowers: corolla tube 9--10 mm; stamens at middle of corolla tube; style ca. as long as tube or slightly exserted. Thrum flowers: corolla tube 1.1--1.3 cm; stamens toward apex of corolla tube; style slightly longer than calyx. Capsule globose, ca. 4.5 mm in diam., disintegrating at maturity.
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