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Issue: Vol. 774 No. 2: 15 Sept. 2026
Type: Article
Published: 2026-09-15
DOI: 10.11646/phytotaxa.774.2.1
Page range: 101-117
Abstract views: 36
PDF downloaded: 3

Catasetum × carllosianum (Orchidaceae, Catasetinae), a new natural hybrid from Brazilian Amazon and taxonomic notes on its putative parents

Universidade Federal do Amapá; Programa de Pós-Graduação em Biodiversidade e Biotecnologia da Rede BIONORTE; 68903-419; Macapá; AP; Brazil
Program of Forest Ecology and Management; Albert Ludwig University of Freiburg; 79098; Freiburg; Germany
Université de Lyon 1; Herbiers; F-69622; Villeurbanne Cedex; France
Mineração Rio do Norte; 68275-000; Porto Trombetas; Oriximiná; PA; Brazil
Instituto Nacional de Pesquisas da Amazônia; Programa de Pós-Graduação em Botânica; 69060-001; Manaus; AM; Brazil
Instituto de Pesquisas Científicas e Tecnológicas do Estado do Amapá; Laboratório de Taxonomia Vegetal; 68903-970; Macapá; AP; Brazil
Monocots Amazon hybridization nothospecies synonymization taxonomy

Abstract

Here we aim to describe Catasetum × carllosianum as a new natural hybrid from the Brazilian Amazon and to provide taxonomic notes on its parental species. The nothospecies was collected in the central region of the state of Rondônia resulting from natural hybridization of two species supposed to be C. boyi and C. semicirculatum. We propose a detailed morphological description, photograph plates, and comparisons with the parent species, as along with data relating on its distribution, habitat, and ecology. Additionally, we discuss the history of the types specimens used in the description of C. fernandezii, including the designation of a lectotype for this name. Finally, we propose to place C. interhomesianum and C. rondonense into the synonymy of C. boyi and C. fernandezii into the synonymy of C. semicirculatum.

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How to Cite

Krahl, D.R.P., Schmal, P., Chiron, G., Silva, J.B.F.D., Krahl, A.H. & Cantuária, P.D.C. (2026) Catasetum × carllosianum (Orchidaceae, Catasetinae), a new natural hybrid from Brazilian Amazon and taxonomic notes on its putative parents. Phytotaxa 774 (2): 101–117. https://doi.org/10.11646/phytotaxa.774.2.1