Ligusticopsis shaniana C. K. Liu & X. J. He 2025, comb. nov.

Ligusticopsis shaniana (F. L. Chen & Y. F. Deng) C. K. Liu & X. J. He comb. nov. Fig. 6 ≡ Peucedanum rubricaule R. H. Shan & M. L. Sheh (1986, p. 305), nom. illeg., non (Boiss.) Baill. (1879) ≡ Peucedanum shanianum F. L. Chen & Y. F. Deng (2019, p. 267) Diagnosis. This species can be easily distinguished from other Ligusticopsis members by the mericarps with filiform dorsal ribs and linear bracts. Description. Perennial herbs, 30–80 cm. Stem solitary or several, erect, purplish, hollow, pubescent, base clothed with fibrous remnant sheaths. Basal petioles with purplish, puberulous, and scarious-margined sheaths; leaf blade triangular-ovate, 3 - pinnatisect; pinnae 3–5 pairs, pinnules 3–4 pairs; ultimate segments linear, 3–10 × 1–1.6 mm, both surfaces glabrous, apex mucronate; cauline leaves reduced upwards, petioles wholly sheathing. Umbels ca. 10 cm across; bracts 6–10, linear, 10–15 × ca. 0.5 mm, puberulous; rays numerous, 24–40, subequal, 3–5 cm; bracteoles ca. 10, both pinnate and linear; umbellules ca. 20 - flowered. Calyx teeth conspicuous, triangular, acute. Mericarp elliptic, 4–6 × 3–4 mm, glabrous; dorsal ribs filiform, lateral ribs narrowly winged, wings rather thick; vittae 1–2 in each furrow, 4–6 on commissure. Distribution and habitat. Ligusticopsis shaniana is distributed in southwestern China (southern Sichuan, northwestern Yunnan). It grows in scrub, grassy slopes, or rock crevices, at altitudes of 2,000 –3,360 m a. s. l. Specimens examined. China, Sichuan: • Yanyuan County, Yousuo, 2750 m a. s. l., 11 Aug. 1963, Q. L. Zhang 1165 (NAS). China, Yunnan: • Shangri-la County, Napa Sea, 3300 m a. s. l., 14 July 2008, Q. E. Yang & Q. Yuan Yang QE 1843 (KUN); • Shangri-la County, Xiaozhongdian, 3214 m a. s. l., 15 Sept. 2008, Q. S. Yang, Y. W. Xin & T. Su ZhouZK-07 ZX-0380 (KUN); • Shangri-la County, Jiantang, 3360 m a. s. l., 15 July 2021, C. K. Liu & J. Q. Lei L 20210703 (SZ); • Shangri-la County, Xiaozhongdian, 3200 m a. s. l., 16 July 2021, C. K. Liu & J. Q. Lei L 20210704 (SZ); • Weixi County, Tongle, 3306 m a. s. l., 14 July 2021, C. K. Liu & J. Q. Lei L 20210702 (SZ). Type. China, Sichuan: • Huidong, 2,000–3,000 m a. s. l., 9 Oct. 1964, J. S. Yue et al. 64199 (holotype: NAS).