Description from Flora of China
Cynoglossum dunnianum Diels, Notes Roy. Bot. Gard. Edinburgh 5: 168. 1912; C. cavaleriei H. Léveillé; Henryettana mirabilis Brand.
Stems 1 or 2, branched only at inflorescences, 10-30 cm tall, densely pubescent. Basal leaves spatulate to narrowly elliptic, 3-18 × 1-5 cm, densely minutely hispid, hairs discoid at base, apex obtuse to acute; stem leaves smaller, oblanceolate to narrowly obovate-oblong. Inflorescences terminal, branched, densely pubescent, many flowered. Pedicel 2-3 mm, slightly recurved. Calyx 3.5-4 mm; lobes linear-lanceo-late to triangular-lanceolate, apex acute, slightly enlarged. Corolla blue or purple-red, 4.5-7 mm, glabrous; appendages trapeziform, 1-1.4 mm, papillate along margin, apex obtuse; lobes of limb spreading, suborbicular, more than 2 × as long as tube, margin entire, veined. Filaments filiform; anthers ca. 0.8 mm. Ovary 4-parted, usually with 1-3 valves developing. Style filiform, 4-5 mm. Nutlets brown, slightly incurved, 2.2-2.5 mm, densely tuberculate, aperture occupying ± entire adaxial surface, outside layer with tuberclelike teeth, inside layer entire. Seeds narrowly ovoid, dorsiventrally com-pressed; radicle inferior. Fl. May-Jun, fr. Jul-Aug.
* Hillside meadows, Pinus and broadleaved forests, thickets, forest margins, roadsides; 1600-2500 m. W Guangxi, Guizhou, SW Sichuan, Yunnan.