Arthonia leptosperma (Müll. Arg.) R. Sant.

URM 63880. Place of collection: Brazil; Maranhão; Alto Turi. Date of collection: 14 December 1966. Associated organisms: Byssopeltis maranhensis; Cephaleuros sp.; Mazosia melanophthalma; Mazosia sp.; Phycopeltis sp.; Plantae indet.; Porina epiphylla; Porina phyllogena; Strigula elegans; Strigula sp. Collector: Anchieta, J. de.