Recognition of Mycena sect. Amparoina sect. nov. (Mycenaceae, Agaricales), including four new species and revision of the limits of sect. Sacchariferae

By

Na, Qin
Bau, Tolgor

Type

Article

Date of Publication

2019

Original Publication

NeoBiota : advancing research on alien species and biological invasions

Volume

52

Pages

103-124

Subjects

Agarics , new taxon , systematics , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sophia, Bulgaria Pensoft Publishers

Identifiers

DOI: https://doi.org/10.3897/mycokeys.52.34647

 

Abstract

Phylogenetic reconstruction revealed that Mycena stirps Amparoina, which is traditionally classified in sect. Sacchariferae, should be treated at section level. Section Amparoina is characterised by the presence or absence of cherocytes, the presence of acanthocysts and spinulose caulocystidia. Eight species referred to Mycenasect.Amparoinasect. nov. are recognised in China. Of these taxa, four new species classified in the new section are formally described: M.bicystidiatasp. nov., M.griseotinctasp. nov., M.hygrophoroidessp. nov. and M.miscanthisp. nov. The new species are characterised by the absence of both cherocytes and a basal disc, along with the presence of acanthocysts on the pileus, spinulose cheilocystidia and caulocystidia. Descriptions of the new species, accompanied by illustrations of morphological characters and comparisons with closely related taxa, are provided. A multi-locus analysis utilising the ITS + nLSU + SSU regions was carried out using maximum likelihood and Bayesian Inference. A key to the 12 species of sect. Amparoinasect. nov. and sect. Sacchariferae that are found in China is provided.