A contribution to the study of Acarosporaceae in South America

Abstract Acarospora dissecta (Bolivia) and Sarcogyne brunnea (Bolivia, Ecuador) are described as new to science. Acarospora trachyticola, a common effigurate species in Peru, is revised and reported as new for Argentina, Bolivia and Venezuela. Acarospora brasiliensis is considered as a later synonym of A. lorentzii, which is reported new for Peru. Sarcogyne terrena is revised. Silobia smaragdula is verified as occurring in Chile. Polysporina urceolata is reported new to South America from Bolivia.

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