Baccharis gibertii Baker (1882: 52)

Heiden, Gustavo & Pirani, José Rubens, 2012, A synopsis and notes for Baccharis subgen. Tarchonanthoides (Asteraceae: Astereae), Phytotaxa 60 (1), pp. 41-49 : 42

1. Baccharis gibertii Baker (1882: 52) . —Type: “ad Maldonado et Montevideo, ad ripas fluminis S. Lucia: Capt. King! Gibert n. 813! 814! Arechavaleta n. 4104! Cunningham!”. URUGUAY. Montevideo: Santa Lucia, 1867, ♀, M. E. Gibert 814 (lectotype K, first-step lectotype designated by Barroso 1976: 63, second-step lectotype designated here (000222026, right hand branch in the top) photo!; isolectoype K (000222026, left hand branch at the bottom) photo!). —Remaining syntypes: URUGUAY. Maldonado: s.d., ♂, P. P. King 63 (K (000222025) photo!). Montevideo: Santa Lucia, 1867, ♂, M. E. Gibert 813 (K (000222027) photo!); Bañado de la Barra de Santa Lucia, November 1814, ♂ & ♀, J. Arechavaleta 4104 (LP (006775)!, MVM!). Cunningham (not found).

For Baccharis gibertii, Barroso (1976) indicated the specimen Gibert 814 as “ holotype ”. Here we propose the right hand branch at the top of the sheet (K000222026) as lectotype and consider the second branch at the base, under the same name and barcode number, as an isolectotype. The choice of one of these two branches is justified because the both branches of Gibert 814 are mounted separately on the same sheet and are mixed with the specimens of Gibert 813 and King 63. The branch chosen here as lectotype is clearly identified by the original label with the type locality, date and collecting number attached to it, and has more capitulescences and capitula than the other regarded as an isolectotype.