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Issue: Vol. 638 No. 3: 5 Mar. 2024
Type: Article
Published: 2024-03-05
DOI: 10.11646/phytotaxa.638.3.7
Page range: 277-284
Abstract views: 22
PDF downloaded: 1

Notes on taxonomy, distribution and conservation of Dichaea species (Orchidaceae: Zygopetalinae) in Brazilian Amazon

Universidade Federal do Amapá, Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Rede BIONORTE, Rodovia Josmar Chaves Pinto, Km 2, Jardim Marco Zero, 68903-419, Macapá, AP, Brazil.
Université de Lyon 1, Herbiers, F-69622, Villeurbanne Cedex, France.
Instituto Nacional de Pesquisas da Amazônia, Programa de Pós-Graduação em Botânica, Departamento de Botânica, Av. André Araújo, 2936, Aleixo, 69060-001, Manaus, AM, Brazil.
Mineração Rio do Norte, Rua Rio Jari s/n, 68275-000, Porto Trombetas, Oriximiná, PA, Brazil.
Instituto de Pesquisas Científicas e Tecnológicas do Estado do Amapá, Laboratório de Taxonomia Vegetal, Rodovia Juscelino Kubitschek, Km 10, 68903-970, Macapá, AP, Brazil.
Amazon Dichaea sect. Dichaeopsis synonymization new record Amazonas State Pará State Monocots

Abstract

In this article we first propose to treat Dichaea integrilabia and D. saraca-taquerensis as synonyms based on analysis of the types, original descriptions and other material conserved in Amazonian herbaria. We also better address the taxonomic issues relating to D. fusca and D. weigeltii which have been wrongly considered as synonymous species. Besides we document the geographical expansion of D. fusca to the state of Pará (Brazil) whereas it was hitherto thought to be restricted to the state of Amazonas (Brazil). For both taxa (D. saraca-taquerensis and D. fusca) we give a taxonomic description, a photograph plate, information about the geographical distribution (with a map) as well as a preliminary conservation status according to IUCN criteria.

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