Scott. Naturalist (Perth) 6: 104 (1881).

Protolog: Data lacking.

Protolog type data: Data lacking.

Type locality: Portugal, Madeira, Funchal, Payne, %C%M%A: 8/26/32, usnic acid, stictic acid (major), constictic acid (minor), menegazziaic acid (minor), norstictic acid (minor) (BM - lectotype). Designated by Clerc, Nord. J. Bot. 7: 489, 1987).

Type locality coordinates: Data lacking.

Molecular barcode: Data lacking.

Thallus: Detailed description in Clerc (1987), James et al. (1992). (Clerc 2006: 196).

Photobiont: Data lacking.

Chemistry: Usnic acid in the cortex, stictic acid group, more or less lobaric acid (12 out of 13 specimens analyzed by TLC have lobaric acid (Clerc 2006: 196). Medulla C-, K+ yellow turning reddish- orange, PD+ yellow turning orangish (stictic, norstictic, ? lobaric acids).

Ecology: Mainly on bark, but also found on stone and wood.

Molecular data: Genbank

Distribution: Locally abundant along the coast from Vest-Agder to Hordaland in Norway, especially on Pinus. Occurs in coastal areas of western Europe, Macaronesia and western North America. Database

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