Smithonian Contr. Bot. 16: 32 (1974).
Basionym: Thelotrema clandestinum Fée, xxx : 90 (1837).
Synonym: Index Fungorum
Protolog: Data lacking.
Type locality: America, on Cinchona lancifolia, without collector (G - lectotype).
Barcode: Available. Data lacking.
Coordinates: Data lacking.
Thallus: whitish to greenish ashy gray, shiny, thick, and continous, forming colonies up to 20 cm broad. Apothecia numerous, immersed, 0.15-0.3 mm in diameter, noncarbonized and without a columella; pore flush, round, 0.007-0.1 mm in diameter, usually with a whitish rim; hymenium 65-75 µm high; spores 8/ascus, uniseriate, 4-5 loculate, muriforme with 1-2 longitudinal septate in atleast one of the locules, 6-10 x 15-20 µm (Hale 1974: 32).
Photobiont: Data lacking.
Chemistry: I+ blue. Psoromic acid, consporomic acid (Hale 1974: 32).
Ecology: Canopy branches in rain forest, 500-670 µm (Hale 1974: 32).
Molecular data: Genbank
Distribution: Database
Mycobank: .
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