Comprehensive Description

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General Description

 Ascomata. Subglobose or ellipsoidal, immersed, superficial when growing on the calcareous tubes of molluscs, ostiolate, papillate, coriaceous or subcarbonaceous, dark brown, solitary or gregarious, periphysate, with "catenophyses" which rapidly become hard to see. Asci. Clavate, pedunculate, untiunicate, thin-walled, no apical apparatus, rapidly becoming hard to see. Ascospores. Ellipsoidal, 1-septate, slightly narrower at the septum, colourless with polar appendages; appendages subterminal, at each end of the spore, at right angles to each other, cylindrical, and attenuate. Paraphyses. Not observed. 

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