Clypeosphaeria Fuckel, Jb. nassau. Ver. Naturk. 23-24: 117 (1870) [1869-70]
Xylariomycetidae, Xylariales, Clypeosphaeriaceae, Clypeosphaeria
Saprobic bark of dead wood. Sexual morph: Clypeus black, dome-shaped, well-developed. Ascomata immersed under the clypeus, coriaceous, black, solitary, scattered, globose to subglobose. Ostiole papillate, central, papilla short, narrow, internally lined with hyaline, filamentous periphyses. Peridium 20–35 μm wide, elongated, flat, comprising outer brown cells of textura angularis and inner hyaline elongated, flat cells of textura angularis. Hamathecium comprising many flexuose, hypha-like, aseptate, unbranched paraphyses, narrowing towards the apex. Asci 8-spored, apex rounded, unitunicate, cylindrical, short pedicellate, with a J- or J+ apical ring. Ascospores uniseriate, dark brown, ellipsoidal to fusiform, unicellular, straight or a little curved, not constricted at the septa, smooth-walled. Asexual morph: Undetermined (adapted from Maharachchikumbura et al. 2016).
Type species: Clypeosphaeria notarisii Fuckel, Jb. nassau. Ver. Naturk. 23-24: 117 (1870) [1869-70]
Notes: Clypeosphaeria is characterized by immersed to erumpent, dark pigmented ascomata, cylindrical to broadly cylindrical asci, with J-, or J+, apical ring and ellipsoidal to fusiform, unicellular to septate, smooth-walled to ornamented or striate, hyaline to dark brown ascospores, sometimes with sheaths or appendages (Saccardo 1883, Kang et al. 1999).
Species illustrated in this entry:
Clypeosphaeria mamillana (Fr.) Lambotte
Kang JC, Hyde KD, Kong RYC. 1999 – Studies on the Amphisphaeriales I. The Clypeosphaeriaceae. Mycoscience 151–164
Maharachchikumbura SSN, Hyde KD, Jones EBG, McKenzie EHC et al. 2016 – Families of Sordariomycetes. Fungal Diversity 79, 1–317
Saccardo PA. 1883 – Sylloge Pyrenomycetum, Vol. II. Sylloge Fungorum 2. Padova 2, 1–815