Onosma dumetorum I. M. Johnston, J. Arnold Arbor. 32: 361. 1951.

Herbs biennial, gray, 30-60 cm tall, densely white hispid, strigose. Stems single or several cespitose, erect to ascending, not branched. Basal leaves oblanceolate, 4-6 cm × 3-5 mm, densely hispid and short strigose, base attenuate, apex obtuse or acute; stem leaves broadly lanceolate, 3-7 × 1.5-2.5 cm. Inflorescences terminal, branched, 2.5-4 cm wide at anthesis; bracts lanceolate, 5-10 × 1-4 mm, hispid, strigose. Pedicel 2-5 mm, densely hispid, strigose. Flowers crowded. Calyx 6-7 mm, parted to slightly below middle, hispid and short strigose outside, densely villous inside; lobes triangular-lanceolate. Corolla yellow, tubular, 1-1.2 cm, 3-4 mm wide at middle, densely short strigose outside; nectary ringlike, ca. 1.5 mm, membranous, irregularly lobed, base white pubescent; lobes usually recurved, triangular, ca. 0.5 mm, margin revolute. Filaments decurrent, 4-5 mm, decurrent part and nearby part of corolla tube pubescent, inserted 2.5-3 mm above base of corolla tube; anthers 3.5-4 mm, included, united at base, sterile apex ca. 1 mm. Nutlets tuberculate, papillate. Fl. Jul.

* Thickets, forest margins; ca. 2400 m. SW Yunnan.