Baccharis patens 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 : 43-44

6. Baccharis patens Baker (1882: 52) . — Type : "Habitat prope Montevideo: Sello n. 463! 729!"!). URUGUAY. Montevideo: s. d., ♀, F. Sellow d463 (lectotype K (000221906) photo! designated here; isolectotypes GH (00003969) photo!, NY! (0016229)) . — Remaining syntypes: URUGUAY. Montevideo: s.d., ♀, F . Sellow s.n. (syntypes K (000222052) photo!), B † photo in F! (0 BN 015027 )) .

Baccharis squarrosa Baker (1882: 50) , non Kunth (1818). —Type: “Habitat in Uruguay, in campis et rupestribus ad Maldonado: Capt. King!; prope Montevideo: Sello n. 2808! 2924!; prope Las Minas in fissuris rupium: Gibert n. 881!.” URUGUAY. Lavalleja: Minas, April 1869, ♂, M. E. Gibert 881 (lectotype K, firststep lectotype designated by Barroso 1976: 57, second-step lectotype designated here (K000222090, uppermost branch) photo!; isolectotype K (000222090, branches of the same collection at the bottom of the sheet) photo!). —Remaining syntypes: URUGUAY. Maldonado: 1826, ♀, P. P. King 28 (K (000222088; 000222091) photos!). BRAZIL. Rio Grande do Sul: Porto Alegre, Morro da Polícia [fide Malagarriga (1957)], June 1825, ♀, F. Sellow 2808 (syntype GH (00004002) photo!). F. Sellow 2924 (not found).

Baccharis bakeri Heering (1904: 39) . —Type: "Reineck & Czermak n. 106. Rio Grande do Sul. Belém Velho an bebuschten Hängen". BRAZIL. Rio Grande do Sul: Porto Alegre, Belém Velho, 12 September 1894, ♂ & ♀, E. M. Reineck & J. Czermak n. 106 (holotype HBG 2 sheets; isotypes P (00509635) photo!, S (10- 22206) photo!).

Barroso (1976) did not lectotypify Baccharis patens . We have designated Sellow d 463 in K (000221906) as the lectotype on the basis of its agreement with the protologue, because it bears more branches and capitula than the remaining isolectotypes, and because of more complete label data, showing clearly the collector and collecting number, when compared to the remaining syntypes. The locality on the label is “ Brasilia ”, however the collection was made in what is now Uruguay, which was annexed by the former Brazilian Empire as the Cisplatina Province during the time when Friedrich Sellow travelled in the region (1822-1823). Barroso (1976) assigned the specimen Gibert 881 in K as type material of B. squarrosa , however, without either using the words “type” or “ holotype ”, and did not cite the remaining syntypes. We interpret this as a first-step inferential lectotypification and the uppermost branch of the same collection (K000222090) mentioned by Barroso (1976) is designated here as the second-step lectotype. The remaining branches under the same label and barcoding number are interpreted here as isolectotypes. Choosing just one of the branches is justified because the detached branches of Gibert 881 are mounted on the same sheet with the syntype specimens of King 28, which are stored under two barcoding numbers (K000222088; K000222091), and three branches of the collection Tweedie 1023 (K000222089), which are not types of B. squarrosa .