长序缬草 chang xu xie cao

Valeriana barbulata Diels var. gymnostoma Handel-Mazzetti; V. hardwickii var. hoffmeisteri Klotzsch; V. hardwickii var. leiocarpa Miquel; V. helictes Graebner; V. rhodoleuca H. B. Chen & C. Y. Cheng; V. rosthornii Graebner; V. udicola Briquet.

Plants to 150 cm tall. Rhizomes short; roots slender, ca. 1 mm in diam. Stolons 1 to several, or absent. Stems erect, often hispidulous below, glabrous above except at nodes. Basal leaves long petiolate; petiole to 9 cm; blade pinnatisect or pinnatifid, rarely simple and cordate; terminal segment ovate to ovate-lanceolate, 3.5-7 × 1.5-3 cm, hispidulous to glabrate, base subrounded, margin entire or serrate, apex acuminate; lateral segments 4 or 6, remote, reduced toward petiole. Cauline leaves similar, gradually reduced apically. Inflorescence paniculiform, flowers and fruit in remote dichasial clusters, primary peduncles to 70 cm; bracts linear-subulate; bracteoles deltoid-ovate, ca. 1/2 as long as achenes, margin entire or crenulate. Corolla white, pinkish white, or purplish, campanulate to funnelform, 1.5-2.5(-3.5) mm, tube and lobes of equal length. Stamens and style subequal to corolla in length or slightly exserted. Achenes broadly ovoid to ovoid, 2-3 × 1-1.2 mm, hispidulous or less frequently glabrous. Fl. Jun-Aug, fr. Jul-Oct. 2n = 14, 16, 28, 32.

Grassy slopes, forest margins, by streams; 900-3800 m. Chongqing (Nanchuan), Fujian (Chong’an), Guangxi (Damiao Shan), Guizhou, SW Hubei, W Hunan (Qianyang, Xinning, Xuefeng Shan), Jiangxi (Wugong Shan), Sichuan, S and SE Xizang, Yunnan [Bhutan, India, Indonesia, Laos, Myanmar, Nepal, Pakistan, Thailand, N Vietnam].