Microcyclospora J. Frank, Schroers & Crous, in Frank et al., Persoonia 24: 99 (2010).
Index Fungorum number: IF 516842; Facesoffungi number: FoF 07018, 5 morphological species (Species Fungorum 2021), 5 species with molecular data.
Saprobic on substrate. Sexual morph: Unknown. Asexual morph: Hyphomycetous. Mycelium consisting of branched, septate, pale brown, smooth, 2–3 µm wide hyphae. Conidiophores reduced to conidiogenous cells, integrated, mono- to polyblastic, lateral on hyphae, sub denticulate, pale brown, smooth. Conidia scolecosporous, cylindrical, straight to variously curved, flexuous, obtuse at apex, truncate at base, 1–multiseptate, somewhat constricted at septa, smooth, pale brown, guttulate, aggregated in mucoid masses; hila not thickened or darkened; microcyclic conidiation reported in culture (adapted from Frank et al. 2010).
Type species: Microcyclospora pomicola J. Frank, B. Oertel, Schroers & Crous
Notes: Microcyclospora accommodates species that were previously placed in Pseudocercospora based on their pigmented conidiophores and pigmented, scolecosporous, transversely septate conidia (Batzer et al. 2005). Microcyclospora can be differentiated from Pseudocercospora in having conidiophores that are reduced to solitary conidiogenous cells on hyphae which shows as mono- to polyblastic (non fasciculate), and conidia that form in mucoid masses, and generally go through microcyclic conidiation. Microcyclospora is a distinct genus in Teratosphaeriaceae based on sequence data. Molecular markers available for Microcyclospora are ITS, LSU, SSU, Actin, RPB2 and TEF-1.
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