Redelimitation of Heteroradulum (Auriculariales, Basidiomycota) with H. australiense sp. nov.

By

Li, Qian-Zhu
Liu, Shi-liang
Wang, Xue-Wei
May, Tom W.
Zhou, Li-Wei

Type

Article

Date of Publication

2022

Original Publication

MycoKeys

Volume

86

Pages

87--101

Subjects

Agaricomycetes , Australia , Grammatus , Heterobasidiomycetes , two new taxa , wood-inhabiting fungi

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.86.76425

 

Abstract

Auriculariales accommodates species with diverse basidiomes and hymenophores. From morphological and phylogenetic perspectives, we perform a taxonomic study on Heteroradulum, a recently validated genus within the Auriculariales. The genus Grammatus is merged into Heteroradulum, and thus its generic type G. labyrinthinus is combined with Heteroradulum and G. semis is reaccepted as a member of Heteroradulum. Heteroradulum australiense is newly described on the basis of three Australian specimens. Heteroradulum yunnanense is excluded from this genus and its taxonomic position at the generic level is considered uncertain. Accordingly, the circumscription of Heteroradulum is re-delimited and the concept of this genus is adjusted by including irpicoid to poroid hymenophores and a hyphal system with clamp connections or simple septa. A key to all nine accepted species of Heteroradulum is presented.