Fungalpedia – Note 3291, Xylobotryomycetes
Xylobotryomycetes Voglmayr & Jaklitsch, Persoonia 42: 41 (2018).
Citation when using this data: Wijayawardene NN et al. 2024 – Fungalpedia.
Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.
Classification: Pezizomycotina, Ascomycota, Dikarya, Fungi.
Notes: Voglmayr et al. (2019) introduced Xylobotryomycetes with Xylobotryales based on unique morphological features and phylogeny analyses. This family contains two families, Cirrosporiaceae and Xylobotryaceae (type family) and each family has a single genus Cirrosporium and Xylobotryum, respectively. The morphology of the type genus of Xylobotryaceae, Xylobotryum, is very similar to Xylaria species, as they produce dark carbonaceous stromata, but Xylobotryum produces naked perithecia and two-celled ascospores (Trierveiler-Pereira et al. 2008). The position of Xylobotryum within Ascomycota was uncertain until Voglmayr et al. (2019) used molecular data to determine its placement. Classification of the type genus of Cirrosporiaceae (Cirrosporium) within Eurotiomycetes, which is close to Mycocaliciales, has been suggested by Réblová and Seifert (2012), which can be a new order. An extensive analysis of Ascomycota by Schoch et al. (2009) resolved the ancestor of the Eurotiomycetes and Voglmayr et al. (2019) showed that Cirrosporium is basal to the Eurotiomycetes.
Type Order: Xylobotryales Voglmayr & Jaklitsch, in Voglmayr, Fournier & Jaklitsch, Persoonia 42: 41 (2018).
Type Family: Xylobotryaceae Voglmayr & Jaklitsch, in Voglmayr, Fournier & Jaklitsch, Persoonia 42: 42 (2018).
Type Genus: Xylobotryum Pat., in Patouillard & Lagerheim, Bull. Herb. Boissier 3(1): 69 (1895).
Type Species: Xylobotryum andinum Pat., in Patouillard & Lagerheim, Bull. Herb. Boissier 3(1): 69 (1895).
Other accepted species: Species Fungorum – search Xylobotryomycetes.
Figure 1 – Xylobotryum andinum (WU 39969, epitype). a Heads of branched stroma showing ascomata (MJF 07074). b Ascomata in vertical section. c Peridium. d Immature and mature asci. e-g Ascospores. Scale bars: a = 1 mm, b = 0.2 mm, c, d = 20 μm, e-g = 5 μm. Redrawn from Voglmayr et al. (2019).
References
Entry by
Nalin N. Wijayawardene, Center for Yunnan Plateau Biological Resources Protection and Utilization, College of Biological Resource and Food Engineering, Qujing Normal University, Qujing, Yunnan 655011, P.R. China, Tropical Microbiology Research Foundation, 96/N/10, Meemanagoda Road, 10230 Pannipitiya, Sri Lanka, Department of Bioprocess Technology, Faculty of Technology, Rajarata University, Sri Lanka
Published online 25 September 2026