Lyophyllum pallidofumosum sp. nov. (Lyophyllaceae, Agaricales), from southwestern China

YUANHAO MA; PING LIU; ZIYUE ZHAO; WEIMIN CHEN; YONGCHANG ZHAO

doi:10.11646/phytotaxa.576.2.3

Issue: Vol. 576 No. 2: 20 December 2022

Type: Article

Published: 2022-12-20

DOI: 10.11646/phytotaxa.576.2.3

Page range: 173-183

Abstract views: 131

PDF downloaded: 2

Lyophyllum pallidofumosum sp. nov. (Lyophyllaceae, Agaricales), from southwestern China

YUANHAO MA⁺⁻
PING LIU⁺⁻
ZIYUE ZHAO⁺⁻
WEIMIN CHEN⁺⁻
YONGCHANG ZHAO⁺⁻

Biotechnology and Germplasm Resources Institute, Yunnan Academy of Agricultural Sciences; Kunming, 650223, Yunnan, China. Yunnan Provincial Key Lab of Agricultural Biotechnology; Kunming, 650223, Yunnan, China. Key Lab of Southwestern Crop Gene Resources and Germplasm Innovation, Ministry of Agriculture, Kunming, 650223, Yunnan, China.

1 new species Basidiomycota Edible mushroom Phylogenetic analyses Taxonomy Fungi

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Abstract

We describe a new species of Lyophyllum based on the morphology and molecular phylogenetic analyses. The species is widely distributed above ca. 2000 m in mixed forests dominated by Pinus yunnanensis, Pinus armandi, and Quercus fabrei in Yunnan Province. It can be distinguished by its greyish orange pileus surface, margin with waves when old; globose to subglobose spores (4.5–5.6 × 4.3–5.4 µm), clavate basidia (25–34 × 7–9 µm). Moreover, the growth rate of cultured mycelia of the species in the YPD medium is higher than that of L. decastes complex species under the same conditions. Phylogenetic analyses based on the internal transcribed spacer (ITS) and large ribosomal subunit (LSU) regions of the nuclear ribosomal DNA (nrDNA) indicated that L. pallidofumosum is a distinct taxon closely related to L. fumosum and L. shimeji.

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