Megacapitula
Megacapitula J.L. Chen & Tzean, Mycol. Res. 97(3): 347 (1993).
Index Fungorum number: IF 25546; Facesoffungi number: FoF 11816, 1 morphological species (Species Fungorum 2022), molecular data unavailable.
Saprobic on host. Sexual morph: Unknown. Asexual morph: Mycelium composed of branched, septate, smooth, roughened, verrucose, hyaline or pigmented hyphae. Conidiophores micronematous, semi macronematous, mononematous, simple or branched, pale brown to brown, smooth, roughened or verrucose. Conidiogenous cells integrated, terminal, lateral or rarely intercalary, determinate. Conidia holoblastic, solitary, ovoid, obclavate, ellipsoidal or obpyriform, muriform, pigmented with densely packed, branched or unbranched, hair-like appendages at the apex (adapted from Chen and Tzean 1993).
Type species: Megacapitula villosa J.L. Chen & Tzean
Notes: Megacapitula is characterised by verrucose, hyaline or pigmented mycelium, integrated, terminal conidiogenous cells and holoblastic, solitary, ovoid, obclavate, ellipsoidal or obpyriform conidia with hair-like appendages at the apex. Megacapitula resembles Chaetomium in having similar size, shape and appendages of the conidia (Ames 1961, Chen and Tzean 1993). Megacapitula is also similar to Akenomyces in having pyriform sclerotia covered with simple, curved or sinuate, colorless hairs but the latter is the asexual stage of a basidiomycete (Hornby 1984). Megacapitula is placed in Pleosporales, genera incertae sedis but the familial rank is uncertain. Molecular markers are lacking for Megacapitula. Fresh collections with DNA sequence data are needed to confirm the taxonomic placement of the genus.
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