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Type: Article
Published: 2021-05-31
Page range: 121–138
Abstract views: 33
PDF downloaded: 1

Novelties in Mimosa sect. Mimosa ser. Mimosa subser. Polycephalae: a new species, new status, and new synonyms

Programa de Pós-Graduação em Ciências Biológicas (Botânica), Depto. de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Universidade Estadual Paulista, Instituto de Biociências de Botucatu, 18618-970, Botucatu, SP, Brazil
Embrapa Recursos Genéticos e Biotecnologia, Parque Estação Biológica – PqEB, 70770-901, Brasília, DF, Brazil
Programa de Pós-Graduação em Ciências Biológicas (Botânica), Depto. de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Universidade Estadual Paulista, Instituto de Biociências de Botucatu, 18618-970, Botucatu, SP, Brazil
Programa de Pós-Graduação em Ciências Biológicas (Botânica), Depto. de Bioestatística, Biologia Vegetal, Parasitologia e Zoologia, Universidade Estadual Paulista, Instituto de Biociências de Botucatu, 18618-970, Botucatu, SP, Brazil Instituto de Ciências Biológicas, Depto. de Botânica, Universidade Federal de Goiás, CP 131, 74001 – 970, Goiânia, GO, Brazil
Cerrado Nomenclatural adjustments SEM Taxonomy Varieties Eudicots

Abstract

Taxonomic studies of Mimosa subser. Polycephalae revealed a new species and indicated the need for taxonomic and nomenclatural adjustments in the group. Mimosa pseudoracemosa is described and illustrated as a new species from Goiás State in central-western Brazil. We discuss its geographic distribution, environmental preferences, phenology and conservation status and compare it with the morphologically similar M. pseudoradula and M. flavocaesia. A new status for M. pseudoradula var. detonsa and a new name are proposed (= M. detonsa), including M. pseudoradula var. anapolitana and M. pseudoradula var. crystallites as its synonyms, as well an updated circumscription for M. pseudoradula without the admission of varieties. We also present descriptions, images, maps, comments on their distributions and morphological relationships, flowering and fruiting periods, and conservation statuses. In addition to the morphological and geographic discontinuities of the aforementioned taxa, their trichome micromorphology supported the establishment of the new species, as well as the taxonomic decisions involving M. pseudoradula.