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Issue: Vol. 757 No. 1: 19 May 2026
Type: Monograph
Published: 2026-05-19
DOI: 10.11646/phytotaxa.757.1.1
Page range: 1-72
Abstract views: 0
PDF downloaded: 0

The genus Candolleomyces (Psathyrellaceae, Agaricales) in the Dominican Republic and other tropical countries, with new molecular data of ancient herbaria

Via Garibaldi 173; I-45010 Villadose (RO); Italy
Jardín Botánico Nacional Dr. Rafael Ma. Moscoso; Santo Domingo; Dominican Republic; Via dei Cappuccini 78/8; I-33170 Pordenone; Italy
Department of Agronomy; Food; Natural Resources; Animals and Environment (DAFNAE); University of Padova; Viale dell’Università 16; I-35020 Legnaro (PD); Italy
Institute of Ecology and Earth Sciences; University of Tartu; J. Liivi 2; 50409 Tartu; Estonia
Fungi Basidiomycetes Morphology New combinations New species Phylogeny Taxonomy

Abstract

Specimens of Candolleomyces from tropical and subtropical regions, mainly the Dominican Republic, the Caribbean, Central America, and southern USA, were analyzed morphologically and molecularly. Historical fungarium types and sequences from Africa, Asia, and the Americas were included. ITS sequences from ancient collections were obtained via Illumina when Sanger sequencing failed. Phylogenetic analyses (Bayesian and Maximum Likelihood) of ITS and, where available, tef1-α clarified poorly known species and revealed new synonymies. Six species are described as new: C. cingulatus, C. dennisianus, C. djondjon, C. fuscodiscus, C. peglerianus, and C. subannulatus; two taxa (C. luteidiscus and C. singerianus) are proposed as nomina provvisoria. Twenty-seven new combinations are proposed, and several historical taxa are synonymized. Only four species occur across both the American and the African/Asian tropics, indicating that climate-selective distribution and regional isolation are drivers of speciation. Ethnomycological notes on the Haitian culinary dish of djon-djon are provided, and a dichotomous key to tropical American and African species is included, refining taxonomy and revealing previously overlooked diversity.

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How to Cite

Voto, P., Angelini, C., Forin, N. & Saar, I. (2026) The genus Candolleomyces (Psathyrellaceae, Agaricales) in the Dominican Republic and other tropical countries, with new molecular data of ancient herbaria. Phytotaxa 757 (1): 1–72. https://doi.org/10.11646/phytotaxa.757.1.1