Ceratostomella cuspidata Reblova

Ceratostomella cuspidata (Fr.) Réblová, Mycologia 98: 77. 2006. Sphaeria cuspidata Fr., Syst. Mycol. 2: 220. 1823. Basionym. ≡ Ceratostoma cuspidatum (Fr.) Sacc., Syll. Fung. 1: 474. 1882. Description. See Réblová (2006). Specimens examined. Belgium • Locality and date unknown; B. Declerque (IFBL 57.31, culture no longer viable). New Zealand • West Coast Region, Westland District, Mount Aspiring National Park, Makarora Bush Walk, 500 m N of NP Headquarters in Makarora; decaying wood of Nothofagus sp.; 30 Mar 2005; M. Réblová M. R. 2964 / NZ 629 (PDD 123700, culture ICMP 17629). Habitat and geographical distribution. Saprobe on decaying wood of Nothofagus sp., Quercus sp., and other unidentified hosts, known in the Czech Republic, New Zealand, Norway and Sweden (Fries 1823; Réblová 2006; MyCoPortal). According to GlobalFungi, C. cuspidata is distributed in temperate and subtropical regions in both the Northern and Southern Hemispheres. Identical sequences were found in 28 samples isolated from air and soil in forest and anthropogenic habitats, and occasionally in croplands, grasslands, and shrublands biomes in Australia, Indonesia and New Zealand. The environmental data suggest that C. cuspidata is especially widespread in Australasia. Notes. In our phylogeny, the species is represented by two isolates from Belgium and New Zealand. Ceratostomella cuspidata is well distinguishable from other species by its suballantoid to reniform ascospores, often flattened on one side, measuring 4–5 × 2–3 µm (Réblová 2006). The ascospores are arranged in a fascicle or they are 2–3 - seriate in the sporiferous part of the ascus. Ceratostomella rostrata closely resembles C. cuspidata but stands out due to its larger ascomata and narrower allantoid to suballantoid ascospores.