Lijiangomyces laojunensis gen. et sp. nov. (Mytilinidiaceae), and Sclerococcum stictae (Dactylosporaceae), a new lichenicolous species from Yunnan, China

By

Meng, Qing-Feng
Diederich, Paul
Thiyagaraja, Vinodhini
Ertz, Damien
Wang, Xinyu
Saichana, Natsaran
Hyde, Kevin D
S. Jayawardena, Ruvishika
Fu, Shaobin

Type

Article

Date of Publication

2025

Original Publication

MycoKeys

Volume

114

Pages

277--298

Subjects

2 new taxa , lichen , Morphology , Phylogeny , saprobe , taxonomy

Contributed by

Pensoft Publishers

Language

English

Published by

Sofia, Bulgaria Pensoft Publishers 2011-

Identifiers

DOI: https://doi.org/10.3897/mycokeys.114.146031

 

Abstract

Lijiangomyces laojunensisgen. et sp. nov. and Sclerococcum stictaesp. nov. are reported from China and identified through DNA sequence analyses (LSU, ITS, and tef1-α) and morphological characteristics. Phylogenetic analysis showed that L. laojunensis forms a distinct lineage within Mytilinidiaceae, closely related to the Mytilinidion subclade, leading to the establishment of a new genus within this family. This saprotrophic species grows on the bark of Abies fabri, often surrounded by the thallus of Pertusaria species. Lijiangomyces laojunensis is characterized by broadly open, black hysterothecia, clavate asci, and uniseriate, hyaline muriform ascospores. Sclerococcum stictae, a new lichenicolous species, forms a sister clade relationship to a lichenicolous fungus, S. ricasoliae. It was found on the thallus of Sticta, and is characterized by black apothecia, elongate, cylindrical asci, and brown, elliptical, and 1-septate ascospores. Descriptions, illustrations, and phylogenetic analysis results of the new taxa are provided.