Swertia punicea Hemsl.

Annuals 15-80 cm tall. Roots yellow, stout. Stems erect, 2-7 mm in diam., subquadrangular, narrowly winged on angles, branched. Basal leaves withered at anthesis. Stem leaves sessile, linear-lanceolate, lanceolate, or narrowly elliptic, to 6 × 1.8 cm, base narrowed, apex acuminate to acute, veins 1-3 and prominent. Inflorescences panicles of cymes, many flowered, spreading. Flowers 5merous. Pedicel erect, to 3.2 cm, subquadrangular. Calyx tube 1-1.5 mm; lobes linear-lanceolate to lanceolate, 4-7 mm, apex acuminate to acute, midvein distinct. Corolla yellow or dark purple, 0.8-1.2 cm in diam., tube 1-1.5 mm; lobes lanceolate, 6-10 mm, apex acuminate and apiculate. Nectaries 2 per corolla lobe, radially elongated, with a narrow scale and raised margin with many long fimbriae. Filaments 4-6 mm; anthers ellipsoid, 1.5-2 mm. Style indistinct; stigma lobes capitate. Capsules ovoid-ellipsoid, 1.2-1.5 cm. Seeds pale yellow, ellipsoid, 0.5-0.6 mm; seed coat warty. Fl. and fr. Aug-Nov.

Guizhou, W Hubei, Hunan, Sichuan, Yunnan

* 400-3800 m.

Swertia punicea is a plant species in the genus Swertia.

The xanthonoids methylswertianin and bellidifolin can be isolated from S. punicea.

Swertia punicea là một loài thực vật có hoa trong họ Long đởm. Loài này được Hemsl. miêu tả khoa học đầu tiên năm 1890.

紫红獐牙菜（学名：Swertia punicea）为龙胆科獐牙菜属下的一个种。