Thallomyces
Thallomyces H.J. Swart, Trans. Br. mycol. Soc. 65(1): 84 (1975).
Index Fungorum number: IF 5395; Facesoffungi number: FoF 02341, 1 morphological species (Species Fungorum 2022), no molecular data available
Vegetative growth entirely intracuticular. Hyphae wide and flattened, subdivided by muriform septation, forming a dark circular colony. Sexual morph: Ascocarps superficial, stromatic, flattened, circular with surface layer radial in structure, containing a single locule at maturity opening with an irregular central pore. Asci parallel, arising from a thin basal layer, bitunicate, relatively wide with a short stalk containing eight two-celled ascospores which turn light brown at maturity. Paraphysoids present. Asexual morph: Unknown (adapted from Swart 1975).
Type species: Thallomyces oritis (Hansf.) H.J. Swart
Notes: Thallomyces is characterised by superficial, stromatic, flattened ascocarps, bitunicate short-stalked asci and two-celled brown ascospores. Inácio and Cannon (2008) provided an updated account of Thallomyces. Molecular data is lacking for Thallomyces. Thallomyces is currently a distinct genus in Parmulariaceae. Fresh collections with DNA sequence data are needed to confirm the taxonomic position of Thallomyces. Thallomyces needs epitypification.
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