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Description type:Latin diagnosis 
Description:Genus Thelotrematacearum, algas ad Trentepohliam pertinentes in thallo continens. Thallus crustaceus. Apothecia sessilia, subglobosa vel doliiformia, perithecioidea, hemiangiocarpia, primum clausa, demum poro terminali aperientia. Excipulum cupulatum, fuscum vel atrobrunneum, intus paraphysibus lateralis hyalinis instructum. Discus ureceolatus. Hymenium non-amyloideum. Paraphyses rectae, simplices. Asci non-amyloidei, cylindrici, ad typum Ostropales dictum pertinentes, 1-4-spori. Ascosporae hyalinae, ellipsoideae, lepto-dermatidae, murali-divisae, non-halonatae, in Iodo rubescentes vel non-amyloideis. Pycnidia ignota. 
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