Rossmania Lar.N. Vassiljeva, Mycoscience 42(4): 401 (2001)

Index Fungorum number: IF28578; 2 morphological species (Species Fungorum 2020), 1 species with sequence data.

Saprobic on dead woody bark. Sexual morph: Ascomata immersed under the bark, in clusters with convergent, long, stout erumpent necks, without an ectostromatic disc, globose, coriaceous, black. Necks wide, opening through the ostiole, internally covered by hyaline periphyses, comprising brown cells of textura porrecta. Peridium thick, comprising outer, thick-walled, brown cells of textura angularis and inner thick-walled, hyaline cells of textura angularis at the base. Hamathecium aparaphysate. Asci 8-spored, unitunicate, clavate to cylindrical, short pedicellate, apex rounded, lacking an apical ring. Ascospores 4–5-seriate to fasciculate, long fusoid to cylindrical, slightly curved, 0–11-septate, hyaline to light yellow. Asexual morph: Undetermined.

Type species – Rossmania ukurunduensis Lar.N. Vassiljeva

Notes – Rossmania was introduced to accommodate taxa having clustered ascomata with long beaks, a non-united ectostromatic disc, and septate, elongate ascospores (Vasilyeva 2001). Rossmania comprises R. ukurunduensis and R. aculeata (Vasilyeva 2001). Rossmania ukurunduensis was collected in Russia associated with Acer ukurunduense, while R. aculeata was collected from Sri Lanka associated with Theaceae (Vasilyeva 2001).

Species

  • Rossmania ukurunduensis