Verkley, Studies in Mycology 50 (2): 330 (2004)
Pleosporales, Sub-order Massarineae
Paraconiothyrium Verkley, Stud. Mycol. 50(2): 327 (2004)
Type species: Paraconiothyrium estuarinum Verkley & Manuela Silva, in Verkley, da Silva, Wicklow & Crous, Stud. Mycol. 50(2): 327 (2004)
Paraconiothyrium cyclothyrioides Verkley, Studies in Mycology 50 (2): 330 (2004)
Asexual morph: saprobic, conidiomata submerged in the agar, or superficial, eustromatic, with a single cavity, mostly complex, irregularly globose or flattened, reddish brown to black, 0.3–1.2(–1.6) mm diam., with several merging cavities, ostioles absent or poorly differentiated; conidiomatal wall composed of a 30–75 µm thick outer layer of isodiametric and irregular cells with reddish brown walls thickened up to 2 µm, and a 25– 50(–65) µm thick inner layer of textura angularis with cells 3–10 µm diam. with hyaline walls thickened up to 1 µm. The surface of the conidiomatal wall sometimes clothed by a diffuse network of brown entangling hyphae. Conidiogenous cells integrated in very compact conidiophores, rarely discrete in masses of cells protruding into the cavity, ampulliform to subcylindrical, hyaline, indeterminate, phialidic, periclinal thickening and collarette indistinct, sometimes with one or two percurrent proliferations, mostly 4.5–8 2.5–4 m. Conidia 1-celled, short-cylindrical, straight or slightly curved, rounded at both ends, with one or two very small, polar guttules, with thin and smooth walls which are hyaline at secession, but soon become yellowish brown, on OA (2.5–)3–4.2(–5) (1–)1.2– 1.5(–1.8) m, (2.5–)3–4.8(–6) (1–)1.2–1.6(–2) m on MEA (all diffuse daylight). Sexual morph: Undetermined.
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