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Type: Article
Published: 2022-02-28
Page range: 252-260
Abstract views: 35
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A new species of Chamaecrista sect. Absus (Leguminosae, Caesalpinioideae) from Minas Gerais, Brazil, with Notes on Leaf Anatomy

Departamento de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Instituto de Biociências, Universidade Estadual Paulista, 18618-000, Botucatu, São Paulo, Brazil
Comparative Plant and Fungal Biology Department, Royal Botanic Gardens, Kew, Richmond, Surrey, TW9 3AB, UK.
Departamento de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Instituto de Biociências, Universidade Estadual Paulista, 18618-000, Botucatu, São Paulo, Brazil
Programa de Pós-graduação em Biologia Vegetal, Departamento de Biologia Vegetal, Instituto de Biologia, Universidade Estadual de Campinas, 13083-862, Campinas, São Paulo, Brazil
Department of Geosciences and Natural Resource Management, Rolighedsvej 23, 1958 Frederiksberg C, University of Copenhagen, Denmark
Departamento de Botânica, Instituto de Ciências Biológicas, Universidade Federal de Goiás, CP 131, 74001–970, Goiânia, GO, Brazil
Departamento de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Instituto de Biociências, Universidade Estadual Paulista, 18618-000, Botucatu, São Paulo, Brazil
Departamento de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Instituto de Biociências, Universidade Estadual Paulista, 18618-000, Botucatu, São Paulo, Brazil
Campos rupestres Cerrado Chamaecrista section Absus Fabaceae glands taxonomy Eudicots

Abstract

A new species of Chamaecrista was found in the Serra do Espinhaço region in the state of Minas Gerais, Brazil, during an expedition to study the taxonomy of this genus. Chamaecrista sempreviva Fort.-Perez & L.C. Zeferino sp. nov. is herein described, illustrated, and assigned to Chamaecrista sect. Absus. Comments about the ecology, distribution, preliminary conservation status as well as its morphological relationships and flowering and fruiting season of the new species, are provided. Additionally, a secretory structure survey of the leaflets of the new species and its related congeners is presented. All species studied share the presence of secretory and mucilaginous idioblasts in their leaflets, but the position of these cells types serves to differentiate them.

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