Fungalpedia – Note 1663, Thoracella
Thoracella Oudem.
Index Fungorum, Facesoffungi, MycoBank, GenBank.
Classification: Incertae sedis, Incertae sedis, Incertae sedis, Incertae sedis, Pezizomycotina, Ascomycota, Fungi
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).
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.
Type species: Thoracella ledi Oudem., Ned. kruidk. Archf, 3 sér. 2: 267 (1901).
Other accepted species: Species Fungorum – search Thoracella.
References
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.