Fungalpedia – Note 2805, Xenoanthostomella
Xenoanthostomella. Mapook & K.D. Hyde.
Citation when using this data: Samarakoon MC et al. 2021 – Fungalpedia.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Incertae sedis, Xylariales, Xylariomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Notes: Xenoanthostomella was introduced by Hyde et al. (2020a) with the type Xe. chromolaenae on Chromolaena odorata from Thailand. The genus has immersed ascomata beneath a clypeus, cylindrical to broadly filiform asci and aseptate, broadly fusiform ascospores. Based on phylogenetic uncertainty, Xenoanthostomella has been accepted in Xylariales, genera incertae sedis (Hyde et al. 2020a). In our multigene phylogeny, Clade Xy23 comprises Calceomyces, Ceratocladium, Circinotrichum, Gyrothrix and Xenoanthostomella. However, only Calceomyces lacunosus (CBS 633.88) has type sequences (Wendt et al. 2018). Even though Xenoanthostomella is morphologically similar to “Anthostomella helicofissa clade”, we here treat it as a separate genus until further studies are undertaken.
Type species: Xenoanthostomella chromolaenae Mapook & K.D. Hyde, in Hyde et al., Fungal Diversity 100: 237 (2020).
Other accepted species: Species Fungorum – search Xenoanthostomella.
Figure 1 – Xenoanthostomella chromolaenae (MFLU 18-0840). a Host (Nephrolepis sp.). b substrate. c,d Stromata in dead substrate. e Section through stroma. f,g Peridium. h paraphyses. i Apical ring blueing in Melzer’s reagent. j–r Ascospores (white arrows show germ slits). s–v Asci. Scale bars: b = 1 cm, c = 1000 μm, d,e = 100 μm, f,s–v = 20 μm, g,i–r = 10 μm, h = 5 μm.
References
Entry by
Milan C. Samarakoon, School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, P.R.
China
Published online 19 June 2026