Calea marginata S.F.Blake (1937: 387)

Bueno, Vinicius R., Reis-Silva, Genilson A., Nakajima, Jimi N., Gostel, Morgan R. & Heiden, Gustavo, 2025, A new narrower circumscription and a nomenclatural synopsis for Calea subg. Meyeria (Asteraceae: Neurolaeneae), Phytotaxa 683 (3), pp. 273-280 : 275

Calea marginata S.F.Blake (1937: 387) .

Meyeria longifolia Candolle (1836: 671) . Calea longifolia (DC.) Baker (1884: 260) , non Calea longifolia Gardner (1848: 418) . Calea barrosoana H. Robinson (1979: 274) , nom. illeg. superfl.

Protologue:—“V.s. in h. Mus. reg. Par. ex h. imp. Bras. sub. n. 407”.

Holotype:— BRAZIL. São Paulo / Paraná , 1828–1829, F. Sellow s.n. ( P [ P02140741 ]!; isotype G [ G00456488 , fragment], digital image!).

Note:— Calea marginata was proposed by Blake (1937) based on the type specimens of Meyeria longifolia Candolle. He proposed the new name because the specific epithet was already preoccupied by C. longifolia Gardner (1848: 418) . The superfluous name C. barrosoana was proposed by Robinson (1979) as a new name for M. longifolia Candolle , since he was unaware of Blake’s previous publication.

In the protologue, the type specimen collector of C. marginata is not indicated. The specimen label of P02140741 has only an indication of C. Gaudichaud-Beaupré ’s name, which could suggest that he was the collector of the specimen. However, most of the materials assigned as collections done by him should be interpreted as belonging to his personal herbarium, as some of them were, for example, originally collected by F. Sellow ( Moraes 2020). Furthermore, it is known that C. Gaudichaud-Beaupré has never collected in the habitat of this species in the “campos gerais” of the Paraná and São Paulo states border ( Moraes 2020). So, it is assumed that the type specimen corresponds to a collection by F. Sellow that belonged to Gaudichaud-Beaupré personal herbarium. Furthermore, the specimen could not have been collected in 1833, as Sellow had already passed away at that given date. Pruski (2023) indicates that P02140741 would be a specimen collected in 1833, however this year refers to the year when Gaudichaud - Beaupré incorporated this Sellow collection into his personal herbarium ( Moraes 2023).

According to Herter (1933), Sellow traveled between 1828 and 1829 through the regions where this species naturally occurs from Curitiba (Paraná state) to Itapeva (São Paulo state) through the “Caminho das Tropas”, an ancient cattle trading route in Brazil linking South and Southeastern Brazil from the 17th to the 19th century ( Souza 2014). Considering the timespan when Sellow may have collected the specimen, this area referred in the label as São Paulo today is part of the state of Paraná, which was established in 1853 following the emancipation of land that was formerly part of the state of São Paulo. The available data does not allow mapping the precise locality nor can the collection year be ascertained. To reflect this uncertainty, we provide a range of possible collection years and the collection locality as the border area between these two states.