1. Centranthera grandiflora Bentham, Scroph. Ind. 50. 1835.
大花胡麻草 da hua hu ma cao
Herbs, 50-80 cm tall. Stems stout, erect, terete or subtetragonal, hirsute, apically channeled, simple or apically sparsely branched. Leaves opposite below, rarely apically alternate, sessile, elliptic, 2-5 X 1-2.6 cm, margin somewhat revolute, sparsely serrate, 3-5-toothed or -lobed, with pustulose or circular scalelike-based setae, abaxially with 3 longitudinal, coarsely bulging, and subparallel veins. Pedicel 4-6 mm, hispidulous. Bracteoles inserted at base of pedicel, subulate, 4-5 mm, hispidulous. Calyx ovate, 1.4-2 X ca. 1 cm, hispidulous, apex constricted into a point ca. 2 mm, slightly bowed. Corolla yellow, 3.5-4.3 cm. Fl. Jul-Sep.
Trailsides, open fields; ca. 800 m. Guangxi, Guizhou, Xizang (Zayü Xian), Yunnan [Bhutan, India, Myanmar, Nepal, Sikkim, Vietnam].