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Issue: Vol. 333 No. 2: 9 January 2018
Type: Article
Published: 2018-01-09
DOI: 10.11646/phytotaxa.333.2.10
Page range: 259–266
Abstract views: 23
PDF downloaded: 1

Rigidotubus tephroleucus gen. et sp. nov. (Cystostereaceae, Agaricales) evidenced by morphological characters and phylogenetic analyses

Institute of Microbiology, Beijing Forestry University, Beijing 100083, China Key Laboratory of State Forestry Administration on Tropical Forestry Research, Research Institute of Tropical Forestry, Chinese Academy of Forestry, Guangzhou 510520, China
Institute of Microbiology, Beijing Forestry University, Beijing 100083, China
Institute of Microbiology, Beijing Forestry University, Beijing 100083, China
Institute of Microbiology, Beijing Forestry University, Beijing 100083, China
Institute of Microbiology, Beijing Forestry University, Beijing 100083, China
Beijing advanced innovation centre for tree breeding by molecular design, Beijing Forestry University, Beijing 100083, China
Basidiomycota phylogeny taxonomy white rot wood-rotting fungi Fungi

Abstract

A new poroid wood-inhabiting fungal genus, Rigidotubus, is proposed to accommodate  R. tephroleucus sp. nov. based on morphological characters and molecular evidence. The genus is characterized by tough and poroid basidiomata, white to grayish white pore surface, white sterile margin, a monomitic hyphal system with clamped generative hyphae, ovoid to ellipsoid basidiospores negative in Melzer’s reagent and Cotton Blue. The phylogenetic analyses inferred from the internal transcribed spacer (ITS) and nuclear large subunit (28S) ribosomal RNA gene regions confirmed that Rigidotubus belongs to Cystostereaceae in Agaricales. A key to the accepted genera of Cystostereaceae is provided.