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Article
Published: 2019-10-08

A new non-Andean South American Chysis (Bletiinae-Orchidaceae) with pale flowers

Universidade Federal de Mato Grosso, Departamento de Botânica e Ecologia, Av. Fernando Correa da Costa, Boa Esperança, Cuiabá, MT, Brazil.
Laboratório de Estudos Integrados em Plantas, Departamento de Botânica e Ecologia, Universidade Federal de Mato Grosso, Av. Fernando Correa da Costa, Boa Esperança, Cuiabá, MT, Brazil. Programa de Pós-Graduação em Biodiversidade Ambiente e Saúde, Universidade Estadual do Maranhão, Departamento de Química e Biologia, Praça Duque de Caxias, s/n, Morro do Alecrim, Caxias, MA, Brazil.
Brazil Cerrado Epidendreae Neotropics Monocots

Abstract

A new species of Chysis sect. Chysis is described from the Central-West region of Brazil. It is similar to C. aurea and C. bruennowiana, the other two South American species of the genus, but differs in the pale pink perianth with magenta stripes or dots on the labellum and on the abaxial surface of the column, and by a labellum that is wider than long with the mid-lobe not surpassing the length of the lateral lobes. The species, which confirms the presence of the genus in the Brazilian plateau, had been previously misidentified as C. laevis. Photographs, an illustration, and a key to the South American species are provided.