Jacobaea nudicaulis (Buchanan-Hamilton ex Don) Nordenstam (2006: 12)

Tong, Tian-Jing, Ren, Chen & Yang, Qin-Er, 2018, The identity of Senecio obtusatus (Asteraceae, Senecioneae) and a previous misapplication of the name, Phytotaxa 351 (2), pp. 154-162 : 155

1. Jacobaea nudicaulis (Buchanan-Hamilton ex Don) Nordenstam (2006: 12) . Senecio nudicaulis Buchanan-Hamilton ex Don (1825: 178). Figs. 1 , 6 .

Type:— NEPAL. [without locality], Hamilton s.n. (holotype BM, not seen).

= Senecio obtusatus Wallich ex Candolle (1838: 367) , syn. nov.

Type:— BANGLADESH. Silhet, De Silva in Wallich 3133 (holotype G-DC00329608!, isotypes BM 000996016!, K 001118618!, K 000102203!). Fig. 1 .

For a full synonymy, description and distribution of this species see Jeffrey & Chen (1984), Chen (1999), Nordenstam (2006), and Chen et al. (2011).

Notes: — We have been unable to trace the type collection of Jacobaea nudicaulis from BM. Jeffrey & Chen (1984) stated that the holotype of this species was kept in BM, but they also did not see it. Indeed, Don (1825) cited only the Hamilton material in the protologue of Senecio nudicaulis . Nordenstam (2006) did not mention the type material of S. nudicaulis when transferring this species to Jacobaea . He may have regarded it as a species name with well-established identity.

Figures

FIGURE 1. Holotype and isotype sheets of Senecio obtusatus (= Jacobaea nudicaulis). A. Holotype (G-DC). B. Isotype (BM). C. Isotype (K). D. Isotype (K; only the right three individuals).

FIGURE 6. Specimens of Jacobaea nudicaulis from China.A. Guizhou, P.J. Cavalerie 4205 (P). B. Sichuan, Puge, Z.T. Guan 7357 (PE). C. Yunnan, Binchuan, J.M. Delavay 4853 (P). D. Yunnan, Kunming, Wang & Liu 1383 (KUN).