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Issue: Vol. 655 No. 3: 26 Jun. 2024
Type: Article
Published: 2024-06-26
DOI: 10.11646/phytotaxa.655.3.1
Page range: 221-230
Abstract views: 48
PDF downloaded: 65

Geopyxis carolinae sp. nov. (Pezizomycetes, Ascomycota) from Mexico

Tecnológico Nacional de México. Instituto Tecnológico de Ciudad Victoria. Blvd. Emilio Portes Gil #1301Pte., 87010, Ciudad Victoria, Tamaulipas, México
Tecnológico Nacional de México. Instituto Tecnológico de Ciudad Victoria. Blvd. Emilio Portes Gil #1301Pte., 87010, Ciudad Victoria, Tamaulipas, México
Tecnológico Nacional de México. Instituto Tecnológico de Ciudad Victoria. Blvd. Emilio Portes Gil #1301Pte., 87010, Ciudad Victoria, Tamaulipas, México
Department of Urban Bioresources, Faculty of Urban and Aquatic Bioresources, University of Sri Jayewardenepura, Gangodawila, Nugegoda 10250, Sri Lanka
Instituto Politécnico Nacional, Escuela Nacional de Ciencias Bilógicas, Laboratorio de Micología, Prolongación de Carpio y Plan de Ayala, Santo Tomás, Alcaldía Miguel Hidalgo, 11340 Cd. Mx., México
new species Abies forest Ectomycorrhizal fungi Pyronemataceae Pyrophylls Fungi

Abstract

Geopyxis is an ectomycorrhizal genus found in temperate forests. The members form yellow and orange to brown apothecia that range from 3–25 mm in diameter. Its ascospores are smooth to finely verrucous. The specimen collected from Mount Tlaloc, Texcoco, State of Mexico, was identified as Geopyxis carolinae sp. nov. This species typically forms sessile apothecia, cupuliform to discoid, and its ascospores are the largest [17–23(25) × 10–12 µm] within the genus. The species was found growing on a burnt ground associated with Abies religiosa. Multi-gene phylogenetic analyses inferred from ITS and LSU sequence data confirmed that Geopyxis carolinae is distinct from other Geopyxis spp. The new species is described, illustrated, and compared with similar taxa based on molecular and morphological data.

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