Atractospora Réblová & J. Fourn., Mycol. Progr. 15(no. 21): 8 (2016)
MycoBank number: MB 815026; Index Fungorum number: IF 815026; Facesofungi number: FoF 05072; 6 species with sequence data.
Type species – Atractospora reticulata Réblová & J. Fourn.
Notes – Atractospora was introduced by Réblová et al. (2016a) with three new species and a new combination. Zhang et al. (2017a) extended the generic description to accommodate taxa with both thick- and thin-walled ascospores as A. thailandensis was included based on phylogeny and otherwise similar morphology. Asexual morphs of this genus have not been reported from the natural substrate, however, asexual structures were observed in cultures of A. decumbens and characterized by ellipsoidal to subglobose conidia, brown, aseptate, and thick-walled often forming in short chains of three to five cells (Réblová et al. 2016a).
Figure 38 – Atractospora thailandensis (Material examined – THAILAND, Prachuap Khiri Khan, on submerged wood in a small river, 30 July 2015, W. Dong 56B, HKAS 96226, holotype). a, b Appearance of dark brown to black ascomata semi-immersed on host. c Vertical section of ascoma. d Structure of peridium. e Paraphyses. f-h Unitunicate asci. i, j Ascospores. Scale bars: c = 50 μm, d-f = 20 μm, g, h = 40 μm, i, j = 10 μm.