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Issue: Vol. 622 No. 1: 24 Oct. 2023
Type: Article
Published: 2023-10-24
DOI: 10.11646/phytotaxa.622.1.4
Page range: 63-74
Abstract views: 303
PDF downloaded: 14

A new species of Hygrocybe (Hygrophoraceae, Agaricales) from Kerala State, India

Department of Botany; University of Calicut; Kerala; 673 635; India
Department of Botany; University of Calicut; Kerala; 673 635; India
Department of Botany; Mahatma Gandhi Government Arts College; Mahe; Union Territory of Pondicherry; 673 311; India
Department of Botany; University of Calicut; Kerala; 673 635; India
Fungi Basidiomycota phylogeny taxonomy tropical fungi waxcaps

Abstract

Hygrocybe snigdha sp. nov. is described from Kerala State, India, based on both morphology and molecular phylogeny. This species is characterized by small basidiocarps with a deep red, strongly viscid pileus with an orange-white margin, dimorphic basidiospores and basidia, lamella-edges with abundant pseudocystidia, and an ixocutis-type pileipellis and stipitipellis. The phylogenetic analyses based on independent data matrices of the internal transcribed spacer (nrITS) and nuclear large subunit (nrLSU) of the ribosomal gene confirmed the novelty and the taxonomic position of H. snigdha within the section Velosae of the subgenus Hygrocybe. A comprehensive description of this new species is provided, along with comparisons with phenetically and phylogenetically related species, photographs of the basidiocarps, line drawings of the microscopic structures, and phylograms showing the infrageneric placement of the new species.

 

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