Taxonomic study of Collybiopsis (Omphalotaceae, Agaricales) in the Republic of Korea with seven new species

By

Kim, Ji Seon
Cho, Yoonhee
Park, Ki Hyeong
Park, Ji Hyun
Kim, Minkyeong
Kim, Chang Sun
Lim, Young Woon 1969-

Type

Article

Date of Publication

2022-3-30

Original Publication

MycoKeys

Volume

88

Pages

79--108

Subjects

Collybia , gymnopoid , Gymnopus , ITS , Marasmiellus , marasmioid , nrLSU

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.88.79266

 

Abstract

Collybiopsis is a genus of the gymnopoid/marasmioid complex of the family Omphalotaceae. The classification system of Collybiopsis has recently undergone large changes through molecular approaches. The new classification system has not been applied for Collybiopsis in the Republic of Korea, and general research on this genus was also lacking. In this study, we analyzed the Collybiopsis species in the Republic of Korea by assessing all gymnopoid/marasmioid specimens collected nationwide for ten years by combining morphological approaches and multilocus (ITS + nrLSU) phylogenetic analysis. We thus confirmed that 16 species of Collybiopsis are present in the Republic of Korea, including two previously unreported species (Co. nonnulla and Co. dichroa) and seven new species (Co. albicantipessp. nov., Co. clavicystidiatasp. nov., Co. fulvasp. nov., Co. orientisubnudasp. nov., Co. subumbilicatasp. nov., Co. undulatasp. nov., and Co. vellereasp. nov.). A thorough examination of the Collybiopsis suggested that it is difficult to distinguish or identify the species based on morphological characteristics only; a combined molecular approach is needed for accurate identification. The Collybiopsis database of the Republic of Korea is updated, and information on the new species is provided. Five new combinations from Marasmiellus to Collybiopsis are also proposed (Co. istanbulensiscomb. nov., Co. koreanacomb. nov., Co. omphalodescomb. nov., Co. pseudomphalodescomb. nov., and Co. ramuliciolacomb. nov.).