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Issue: Vol. 620 No. 3: 17 Oct. 2023
Type: Article
Published: 2023-10-17
DOI: 10.11646/phytotaxa.620.3.3
Page range: 225-234
Abstract views: 154
PDF downloaded: 17

A new endemic species of Macropsychanthus (Leguminosae: Papilionoideae) from the Brazilian Atlantic Forest

Programa de Pós-graduação em Botânica; Universidade Estadual de Feira de Santana; Departamento de Ciências Biológicas. Av. Transnordestina s.n.; Novo Horizonte. 44036-900; Feira de Santana; Bahia; Brazil
Instituto de Biologia; Universidade Federal da Bahia; Rua Barão de Jeremoabo; s.n.; Ondina; 40170-115; Salvador; BA; Brazil. Instituto de Pesquisas Jardim Botânico do Rio de Janeiro; Rua Pacheco Leão; 915; 22460-030; Rio de Janeiro; RJ; Brazil.
Departamento de Engenharia de Pesca e Ciências Biológicas; Universidade do Estado de Santa Catarina; Rua Cel. Fernandes Martins 270; Progresso; 88790-000; Laguna; Santa Catarina; Brazil.
Programa de Pós-graduação em Botânica; Universidade Estadual de Feira de Santana; Departamento de Ciências Biológicas. Av. Transnordestina s.n.; Novo Horizonte. 44036-900; Feira de Santana; Bahia; Brazil.
Eudicots Dioclea Diocleae Fabaceae Mata Atlântica

Abstract

The Brazilian Atlantic Forest is a world’s remarkable biodiversity hotspot, seriously endangered by urbanization, industrialization, and agricultural expansion. More than a thousand species of legumes (Leguminosae) occur in the Atlantic Forest, with a record of 443 endemic species. Here, we describe Macropsychanthus ruschii, a new species narrowly endemic from a pristine Atlantic Forest area in the Espírito Santo state, eastern Brazil. This species is uniquely characterized by its inflorescences up to 15 cm and uncommon pink petals. A molecular phylogenetic analysis of nuclear ribosomal (ETS and ITS) and plastid (trnK/matK) DNA sequence data strongly resolves the new species within a clade that exclusively diversified in the Atlantic Forest. This result reinforces the importance of focusing more efforts to conserve and promote biodiversity research in this taxonomically and evolutionarily rich Brazilian phytogeographic domain.

 

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