Scopaphoma
Scopaphoma Dearn. & House, N.Y. St. Mus. Bull. 266: 83 (1925)
Facesoffungi number: FoF 07586
Ascomycota, genera incertae sedis
Hyperparasitic on Polyporus sp. (Polyporaceae). Sexual morph: undetermined. Asexual morph: Conidiomata brown to dark brown, pycnidial, solitary to gregarious or confluent, immersed to semi-immersed, papillate ostioles visible in surface view, globose to subglobose, unilocular, glabrous, thick-walled, ostolate. Ostiole central, circular, papillate. Conidiomatal wall composed of thick-walled, brown to hyaline cells of textura angularis. Conidiophores arising all around the cavity of the conidiomata, hyaline, branched, septate. Conidiogenous cells hyaline, subcylindrical to lageniform, integrated, indeterminate, smooth-walled, Conidia hyaline, ellipsoidal to subcylindrical, straight or slightly curved, 1-septate, apical cell attenuated apically into a flexuous, filiform, tubular, unbranched appendage, basal cell bearing an unbranched, tubular appendage separated from the conidium body by a septum.
Type species: Scopaphoma corioli Dearn. & House, N.Y. St. Mus. Bull. 266: 83 (1925)
Notes: Scopaphoma is a monotypic genus. Scopaphoma corioli is fungicolous on Polyporus sp. and shares similar morphology with Eleutheromyces mycophilus, a fungicolous species on agarics, in having pycnidial conidiomata, and subcylindrical to lageniform, integrated conidiogenous cells. However, they can be differentiated from each other by conidial form. Scopaphoma corioli has ellipsoidal to subcylindrical, 1-septate conidia, while Eleutheromyces mycophilus has ellipsoidal, lenticular or cylindrical, unicellular conidia. No sexual morph has been linked to this genus and no molecular data is available. Fresh collections are needed to place it in a natural group.
Distribution: Canada, USA (Nag Raj 1993, this study).
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.
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