Cytoplea Bizz. & Sacc., in Bizzozero, Atti Inst. Veneto Sci. lett., ed Arti, Sér. 6 3: 307 (1885).

MycoBank number: MB 7902; Index Fungorum number: IF 7902; Facesoffungi number: FoF 01788; 17 morphological species (Species Fungorum 2020), 1 species with molecular data.

Type species – Cytoplea arundinicola Bizz. & Sacc., in Bizzozero, Atti Inst. Veneto Sci. lett., ed Arti, Sér. 6 3: 307 (1885).

Notes – The genus Cytoplea was introduced by Bizzozero (1885) to accommodate the coelomycetous asexual morph, which is characterized by superficial, pulvinate, confluent, effuse shell-like, multi-loculate conidiostromata, with more than five locules, distinctly minute euboid, olive-fuligineum, ovoid-oblong, continuous conidia, initially subcatenulate, stipitate, with filiform paraphyses (Bizzozero 1885). The genus was reported as asexual morph of Roussoella when Hyde et al. (1996) obtained cytoplea-like asexual morph on the living culture of Roussoella hysterioides and was introduced as Cytoplea hysterioides. However, the species is regarded as a synonym of Roussoella hysterioides (Species Fungorum 2020). The treatment provided by Hyde et al. (1996) was accepted from subsequent authors (Hyde 1997, Kang et al. 1998, Verkley et al. 2004). However, the congeneric status of Cytoplea and Roussoella is questionable due to the type species, Cytoplea arundinicola lacks molecular data to confirm the phylogenetic affinity. Liu et al. (2014) mentioned that Cytoplea was a possible synonym of Roussoella, however, the connection of these two genera must be confirmed based on molecular data. Thus, Wijayawardene et al. (2014b) treated these two genera as a separated genus pending further studies. Cytoplea hederae strain CBS 359.68 was obtained the ITS and LSU sequence data by Vu et al. (2019) and the NCBI BLASTn search shows that this strain is closely related to Melanconium hedericola (Melanconidaceae Diaporthales). However, the strain CBS 359.68 is not the type strain and C. hederae is not the type species of Cytoplea. Thus, we tentative place the genus Cytoplea in Roussoellaceae pending further studies.

Species

  • Cytoplea arundinicola