Phaeonawawia, a novel chaetosphaeriaceous anamorph from submerged wood in Malaysia

• Published in: Mycological progress Vol. 20; no. 3; pp. 227 - 245
• Main Authors: Goh, Teik-Khiang, Ou, Jie-Hao, Kuo, Chang-Hsin
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer Berlin Heidelberg 01-03-2021; Springer Nature B.V
• Subjects: Appendages; Bayesian analysis; Biomedical and Life Sciences; Ecology; Fungi; Imperfect state; Life Sciences; Microbiology; New species; Original Article; Phylogeny; Plant Sciences; Sheaths; Statistical inference; Wood; Malaysia; Phylogenetics; Staurospores; Phialoconidia; Freshwater fungi; Dematiaceous hyphomycetes
• ISSN: 1617-416X; 1861-8952
• DOI: 10.1007/s11557-020-01662-9

The anamorphic taxon
Phaeonawawia diplocladielloidea
gen. et sp. nov. is described and illustrated from wood submerged in a freshwater stream in Malaysia. The fungus is generically distinct in the brown, short-stalked, bulbose or urceolate conidiogenous cells with a terminal pore rimmed with a flared collarette, producing large, dematiaceous, versicoloured, multi-euseptate, tetrahedral, or obpyramidal stauroconidia which bear hyaline filiform appendages at the end of the arms and enclosed by a thick, hyaline sheath. The new fungus is compared with some similar anamorphic fungi. Phylogenetic analyses by maximum likelihood and Bayesian inference approaches using the nuc rDNA ITS1-5.8S-ITS2 (ITS barcode) support the placement of this new fungus in the Chaetosphaeriaceae. The various anamorphic forms of chaetosphaeriaceous fungi are briefly discussed.