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FOC | Family List | FOC Vol. 16 | Boraginaceae | Onosma

19. Onosma decastichum Y. L. Liu, Acta Phytotax. Sin. 18: 67. 1980.

易门滇紫草 yi men dian zi cao

Herbs perennial, ca. 45 cm tall, pallid, hispid, densely retrorse pubescent. Stems single, not branched. Basal leaves narrowly lanceolate, 3-6 cm × 3.5-6 mm, abaxially densely tomentose, adaxially hispid and pubescent, base attenuate, apex acute; stem leaves crowded, lanceolate, 3-8 × 1-1.5 cm, abaxially gray-white, densely tomentose, adaxially green, hispid and pubescent, base rounded, apex acuminate; main veins 3, lateral veins conspicuous. Inflorescences terminal and axillary, in densely flowered panicles ca. 10 cm; bracts lanceolate, 5-10 mm. Pedicel ca. 3 mm, slender. Calyx 5-6 mm, densely white pubescent, parted nearly to base; lobes linear-lanceolate. Corolla blue-purple, tubular-campanulate, ca. 1 cm, base 1.5-2 mm wide, gradually expanded upward; throat 3-4 mm wide, densely short strigose outside, 10-ranked, sparsely short hispid inside and between lobes; nectary ca. 0.3 mm, 10-lobed, white villous; lobes triangular-lanceolate, 2-2.5 × 1-1.5 mm, apex recurved. Filaments subulate, inserted 2-2.5 mm above base of corolla tube; anthers laterally united, 7-7.5 mm, almost completely exserted. Style 1.3-1.5 cm. Nutlets gray-brown, 2-2.5 mm, shiny. Fl. Oct.

* Meadows, thickets; ca. 1300 m. C Yunnan


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