Fungalpedia – Note 2599, Xenophoma

 

Xenophoma Crous & Trakun. 

Citation when using this data: Meng QF et al. – Fungalpedia.

 

Index Fungorum, faceoffungi, MycoBank, GenBank, Fig 1.

Classification: Phaeosphaeriaceae, Pleosporales, Pleosporomycetidae, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi

Xenophoma was established based on phylogenetic analysis using LSU and ITS by Trakunyingcharoen et al. (2014) to accommodate the type species Xenophoma puncteliae which originally described as Phoma puncteliae Diederich & Lawrey (Lawrey et al. 2012, Trakunyingcharoen et al. 2014). The type is the only lichenicolous species, and another species X. icrospore Magaña-Dueñas, Stchigel & Cano-Lira was found on plant debris in freshwater in Spain (Magaña-Dueñas et al. 2021). This genus is characterized by irregular to cauliflower-shaped conidiomata with uni- to multilocular, hyaline conidiogenous cells with ampulliform and solitary, hyaline conidia with guttulate and subspherical to ellipsoid shape (Trakunyingcharoen et al. 2014).

Type species: Xenophoma puncteliae (Diederich & Lawrey) Crous & Trakun. 

Other accepted species: Species Fungorum – search Xenophoma

Figure 1 – Xenophoma puncteliae redrawn from Trakunyingcharoen et al. (2014). a Sections throuch conidiomata. b Conidia. Bars: a = 50 μm, b = 10 μm.

 

References

Lawrey JD, Diederich P, Nelsen MP, Freebury C et al. 2012 – Phylogenetic placement of lichenicolous Phoma species in the Phaeosphaeriaceae (Pleosporales, Dothideomycetes). Fungal Diversity 55 (1), 195–213.

Magaña-Dueñas V, Cano-Lira JF, Stchigel AM. 2021 – New Dothideomycetes from freshwater habitats in Spain. Journal of Fungi 7 (12), 1102.

Trakunyingcharoen T, Lombard L, Groenewald JZ, Cheewangkoon R et al. 2014 – Mycoparasitic species of Sphaerellopsis, and allied lichenicolous and other genera. IMA Fungus 5 (2), 391–414.

 

Entry by

Meng QF, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai, 57100, Thailand and School of Public Health, Zunyi Medical University, Guizhou 563000, China.

 

Published online 11 June 2026

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