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Issue: Vol. 733 No. 2: 11 Dec. 2025
Type: Article
Published: 2025-12-11
DOI: 10.11646/phytotaxa.733.2.5
Page range: 215-230
Abstract views: 96
PDF downloaded: 4

An Amazon star is born: Gusmaomyces gen. nov. (Ascomycota incertae sedis) from the Brazilian Amazon

Programa de Pós-Graduação em Ciências Biológicas - Botânica Tropical, Museu Paraense Emílio Goeldi/Universidade Federal Rural da Amazônia, Coordenação de Botânica, Av. Perimetral, 1901, Terra Firme, 66077-830, Belém, PA, Brasil; Instituto Tecnológico Vale, Rua Boaventura da Silva, 955, Nazaré, 66055-090, Belém, PA, Brasil; Museu Paraense Emílio Goeldi, Coordenação de Botânica, Av. Perimetral, 1901, Terra Firme, 66077-830, Belém, PA, Brasil
Programa de Pós-Graduação em Ciências Biológicas - Botânica Tropical, Museu Paraense Emílio Goeldi/Universidade Federal Rural da Amazônia, Coordenação de Botânica, Av. Perimetral, 1901, Terra Firme, 66077-830, Belém, PA, Brasil
Programa de Pós-Graduação em Ciências Biológicas - Botânica Tropical, Museu Paraense Emílio Goeldi/Universidade Federal Rural da Amazônia, Coordenação de Botânica, Av. Perimetral, 1901, Terra Firme, 66077-830, Belém, PA, Brasil; Museu Paraense Emílio Goeldi, Coordenação de Botânica, Av. Perimetral, 1901, Terra Firme, 66077-830, Belém, PA, Brasil
Instituto de Investigaciones de Sanidad Vegetal, Calle 110 No. 514 e/5ta B y 5ta F, Playa, La Habana 11600, Cuba
anamorph foliicolous hyphomycetes new taxa palm tree Fungi

Abstract

Gusmamomyces gen. nov. is introduced with two species, G. asteriformis sp. nov. and G. barbarensis sp. nov., collected on living leaflets of Bactris gasipaes and Elaeis guineensis (Arecaceae) in Pará State, Brazil. This genus is characterized by micronematous, hyaline conidiophores, monoblastic conidiogenous cells with percurrent extensions, and staurosporous, pentaradiate or heptaradiate, distoseptate, smooth or verruculose, hyaline conidia with schizolytic secession. A detailed morphological description is provided along with a comparative taxonomic discussion with the closest staurosporous genera. This new genus sheds light on the diversity of palmicolous fungi and shows the importance of fungal taxonomic surveys in the Brazilian Amazon.

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How to Cite

Monteiro, J.S., Silva, A.P.D., Ferreira, M.C.D.S. & Castañeda-Ruiz, R.F. (2025) An Amazon star is born: Gusmaomyces gen. nov. (Ascomycota incertae sedis) from the Brazilian Amazon. Phytotaxa 733 (2): 215–230. https://doi.org/10.11646/phytotaxa.733.2.5