窄竹叶柴胡 zhai zhu ye chai hu

Bupleurum falcatum var. stenophyllum H. Wolff in Handel-Mazzetti, Symb. Sin. 7: 713. 1933; B. falcatum f. stenophyllum (H. Wolff) P. K. Mukherjee & B. D. Naithani; B. marginatum f. stenophyllum (H. Wolff) H. J. Chowdhery & Wadhwa.

Plants 25–60 cm. Leaves narrow, 3–10 × 0.3–0.6 cm, cartilaginous margin narrow. Bracteoles longer than the pedicels. Fl. Aug–Sep, fr. Sep–Oct. n = 7*.

Alpine forests, river banks, roadsides; 2300–4000 m. Qinghai, Sichuan, Xizang, Yunnan [?Bhutan, ?E Nepal].

The taxonomic status of var. stenophyllum requires further study. Some authors treat it as conspecific with Bupleurum marginatum without any infraspecific designation, but the difference in chromosome numbers favors treating it as a separate taxon, perhaps as a separate species.