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Type: Article
Published: 2022-05-03
Page range: 280-288
Abstract views: 26
PDF downloaded: 1

Calea repanda (Asteraceae: Neurolaeneae), a new species and novel characters for the taxonomy of the genus

Universidade Federal do Rio Grande do Sul, Programa de Pós-graduação em Botânica, Laboratório de Sistemática Vascular, Prédio 43432, sala 107, Porto Alegre, RS 91501-970, Brazil
Botanical Research Institute of Texas, 1700 University Dr, Fort Worth, TX 76107-3400, Fort Worth, United States of America
Embrapa Clima Temperado, Rodovia BR 392, km 78, Caixa Postal 403, Pelotas, RS 96010-971, Brazil
Bem Diverso Project Campo Rupestre Cerrado Compositae Paleaceous Eudicots

Abstract

We describe a new species, Calea repanda, from Brazil and discuss novel morphological characters for the taxonomy of this genus. This new species is morphologically similar to C. gentianoides and C. diamantinensis but is distinct due to repand (vs. entire) leaf margins, radiate (vs. discoid) capitulum, larger involucre 12.2–12.7 × 10.6–12 mm (vs. 5.5–9.4 × 2.7–5.2 mm), disc florets 30–40 (vs. 3–9), and fewer pappus scales 7–10 (vs. 15–20). Calea repanda is endemic to the Diamantina plateau in Minas Gerais state, Southeastern Brazil. We provide a map with the geographic occurrence of this species, an illustration with diagnostic characters, and the first taxonomic key for species of C. sect. Calea from Brazil. Furthermore, we propose a more detailed terminology to describe the proportion of the number of paleae and disc florets in the capitulum receptacle.

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