Thoracella Oudem., Ned. kruidk. Archf, 3 sér. 2: 267 (1901)
Facesoffungi number: FoF 07712
Ascomycota, genera incertae sedis
Parasitic on the host plant in terrestrial habitat. Sexual morph: undetermined. Asexual morph: Conidiomata black, pycnidial, solitary to gregarious or confluent, immersed, subglobose, multilocular, glabrous. Ostiole absent, dehiscence by irregular splits in the upper wall. Conidiomatal wall composed of thick-walled, dark brown to hyaline cells of textura angularis to textura intricata. Conidiophores arising from inner layers of the basal stroma, pale brown to hyaline, subcylindrical to irregular, branched, septate. Conidiogenous cells hyaline, holoblastic, sympodial or synchronous, filiform, integrated, indeterminate, smooth-walled, loci indistinct. Conidia hyaline, cylindrical to oblong or irregular, unicellular, smooth-walled, guttulate (adapted from Sutton 1980).
Type species: Thoracella ledi Oudem., Ned. kruidk. Archf, 3 sér. 2: 267 (1901)
Notes: Thoracella is monotypic, and no molecular data is available. Sutton (1980) illustrated two types of conidiogenous cells, and interpreted that the annellations might be ornamental incrustations of conidiophores, but he could not confirm if this interpretation was correct. Thoracella ledi is associated with tar spots on leaves of Ledum palustre (Sutton 1980). Fresh collections of Thoracella ledi are needed to place it in a natural group.
Distribution: Netherlands (Sutton 1980).
Li WJ, McKenZie EHC, Liu JK, Bhat DJ, Dai DQ, Caporesi E, Tian Q, Maharachcikumbura SSN, Luo ZL, Shang QJ, Zhang JF, Tangthirasunun N, Karunarathna SC, Xu JC, Hyde KD (2020) Taxonomy and phylogeny of hyaline-spored coelomycetes. Fungal Diversity 100: pages279–801.