in Tønsberg, Sommerfeltia 14: 134 (1992).

Protolog: Thallus areolatus, sorediatus. Areolae viridulae ad brunneolae, prothallo circumcinctae. Soralia flavido-viridia ad subviridia, interdum brunnea suffusa, punctiformia. Apothecia F. cyathoideae similis. Sporae hyalinae vel brunneolae, simplices vel uniseptatae, medianae constrictae, 7-9 x 4-5 µm. Pycnidia fusco-nigra, sessilia; conidia 3-3.5 x 1-1.5 µm. Thallus acidum fumarprotocetraricum continens.

Protolog type data: Norway, Nordland, Bindal, Skjelsvik, alt. 0-10 m, UTM grid ref.: 33W UN 7131 (1825 III), 1 June 1982, on trunk of Betula pubescens, Tønsberg 6865 (BG - holotype; UPS, E - isotypes).

Type locality: Norway, Nordland, Bindal, Skjelsvik, on trunk of Betula pubescens, 0-10 m, 1 June 1982, Tønsberg 6865, UTM 33 W UN 7131 (1825 III) (BG - holotype; E, UPS - isotypes).

Type locality coordinates: 65°5'16"N, 12°22'35"E; 65.087778°, 12.376389°.

Molecular barcode: Data lacking.

Thallus: crustose, often in colonies, episubstratal, delimited, forming rosettes up to 3(-5) cm in diameter, or becoming irregularly spreading and/or confluent with adjacent.

Photobiont: Data lacking.

Chemistry: Fumarprotocetraric acid, + protocetraric acid (trace), + cph-2 (trace).

Ecology: On acidic bark.

Molecular data: Genbank

Distribution: Database

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