Tuesday, May 21, 2024

[Funga • 2024] Favolaschia imbricata, F. miscanthi & F. sinarundinariae (Agaricales: Mycenaceae) • Three New Species from South China


 Favolaschia imbricata 
 Favolaschia miscanthi 
Favolaschia sinarundinariae

Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, 

in Q.-Y. Zhang, Liu, Li, X. Zhang, Dai, Wu et Bian, 2024.

Abstract
The genus Favolaschia within the family Mycenaceae is characterised by the gelatinous basidiomata with poroid hymenophore and most species inhabit monocotyledonous plants. In this study, many samples covering a wide geographic range in China were examined morphologically and phylogenetically using concatenated ITS1-5.8S-ITS2-nLSU sequence data. Three new species clustering in Favolaschia sect. Anechinus, namely Favolaschia imbricata, F. miscanthi and F. sinarundinariae, are described. Favolaschia imbricata is characterised by imbricate basidiomata with pale grey to greyish colour when fresh and broadly ellipsoid basidiospores measuring 7–9 × 5–6.8 µm; F. miscanthi is characterised by satin white basidiomata when fresh, broadly ellipsoid basidiospores measuring 7.5–10 × 5.5–7 µm and inhabit rotten Miscanthus; F. sinarundinariae is characterised by greyish-white basidiomata when fresh, dark grey near the base upon drying, broadly ellipsoid to subglobose basidiospores measuring 7–9 × 5–7 µm and inhabit dead Sinarundinaria. The differences amongst the new species and their morphologically similar and phylogenetically related species are discussed. In addition, an updated key to 19 species of Favolaschia found in China is provided.

Key words: New taxa, phylogeny, taxonomy, wood-decaying fungi

Basidiomata and microscopic structures of Favolaschia imbricata
A, B basidiomata (Dai 24702, holotype) C basidiospores D hymenium in trama E basidia and basidioles F tramal hyphae G cheilocystidia at dissepiment edge H hyphae of pileipellis.
Scale bars: 5 mm (A, B); 10 µm (C–H).

 Favolaschia imbricata Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, sp. nov.

 Favolaschia miscanthi Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, sp. nov.


Basidiomata and microscopic structures of Favolaschia sinarundinariae
 A, B basidiomata (A Dai 26123, holotype B Dai 26116) C basidiospores D hymenium in trama E basidia and basidioles F tramal hyphae G cheilocystidia at dissepiment edge H hyphae and terminal cells of pileipellis.
Scale bars: 1 cm (A, B); 10 µm (C–H).

 Favolaschia sinarundinariae Q.Y. Zhang, L.S. Bian, F. Wu & Y.C. Dai, sp. nov.

 
Qiu-Yue Zhang, Hong-Gao Liu, Wan-Ying Li, Xin Zhang, Yu-Cheng Dai, Fang Wu and Lu-Sen Bian. 2024. Three New Species of Favolaschia (Mycenaceae, Agaricales) from South China. MycoKeys. 104: 71-89. DOI: 10.3897/mycokeys.104.117310
[Part of: Taxonomy and secondary metabolites of wood-associated fungi]