New species and new records of Laccaria (Agaricales, Basidiomycota) from Northern Thailand

By

Tang, Song-Ming
Vadthanarat, Santhiti
Raghoonundon, Bhavesh
Luo, Zong-Long
Zhu, Xin-Yu
Yu, Fengming
He, Jun
Li, Shu Hong

Type

Article

Date of Publication

2024

Original Publication

MycoKeys

Volume

107

Pages

189--217

Subjects

2 new taxa , Hydnangiaceae , Phylogeny , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.107.127907

 

Abstract

Two new species Laccaria pseudoalba and L. subroseoalbescens are described and illustrated, based on morphological characteristics and molecular phylogenetic analysis. Two new records, Laccaria umbilicata and L. yunnanensis from Thailand, are also reported. Laccaria subroseoalbescens is characterized by small basidiomata, stipe equal with an enlarged base, and nearly subclavate, pale pink to light orange. Laccaria pseudoalba is characterized by pale orange to orange white pileus, has umbo when young on the pileus, and fistulose stipe of the pale to pastel red color. Phylogenetic analysis based on sequence data from rDNA internal transcribed spacer ITS1-5.8S-ITS2 rDNA (ITS), nuc 28S rDNA (28S), RNA polymerase II subunit 2 (rpb2), and translation elongation factor 1-α (tef1-α) are provided as further evidence. Molecular analysis confirms the phylogenetic positions of the two new species and two new records. The differences in characteristics of these two new species and closely related species are discussed herein.