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Type: Article
Published: 2020-06-30
Page range: 257–272
Abstract views: 37
PDF downloaded: 1

Three new South American species of Callianthe (Malveae, Malvoideae, Malvaceae) from Atlantic Forest and a new combination

Programa de Pós-Graduação em Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul, 91501-970, Brazil.
Programa de Pós-Graduação em Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, Porto Alegre, Rio Grande do Sul, 91501-970, Brazil.
Northeastern Argentina Southern Brazil taxonomy Eudicots

Abstract

Three new species of Callianthe (Malvaceae) from southern Brazil and northeastern Argentina are described, and illustrated: C. flava, C. maritima, and C. sulcatarinensis. Morphological descriptions, distribution maps, photographs, ecological notes, and a table comparing these species to two morphologically similar species, C. amoena and C. muelleri-friderici, are presented. Two of the three newly-described species, C. maritima and C. sulcatarinensis, so far are considered endemic and according to IUCN criteria, fit into the categories Endangered (EN) and Vulnerable (VU), respectively. A new combination C. costicalyx, based on Abutilon costicalyx, also is proposed.