Op. Bot. 42: 115 (1977).

Basionym: Parmelia jubata ß capillaris Ach., Methodus, Sectio post.: 273 (1803).

Synonyms: Index Fungorum

Protolog type data: Data lacking.

Type locality: Sweden (H-ACH 1799 - lectotype). Lectotypification by Brodo & Hawksworth (19xx: 115).

Type locality coordinates: Data lacking.

Molecular barcode: Data lacking.

Thallus: pendent, to 30 cm long, whitish grey to brownish grey, rarely dark brown; dull to slightly shiny. Irregularly branched, usually without distinct main branches, to 0.5 mm diam., angles between branches mainly acute. Soralia absent to abundant, small, tuberculate. Pseudocyphellae fusiform, inconspicuous. Apothecia uncommon, 1- 2 mm diam.; disc brown, becoming convex. Spores ellipsoid to subglobose, 5-9 x 4- 6 μm. Pycnidia unknown.

Photobiont: Data lacking.

Chemistry: Cortex and medulla C+ red or C-, K+ yellow, KC+ red, PD+ yellow; barbatolic acid, sometimes alectorialic acid and atranorin. Soralia PD+ red; fumarprotocetraric acid. Apothecia PD+ yellow; psoromic acid.

Ecology: On both coniferous and deciduous trees, occasionally on rocks, especially in shaded, humid spruce forests.

Molecular data: Genbank

Distribution: Widespread, becoming rarer towards the north. Incompletely circumboreal with oceanic tendencies. Europe, Macaronesia, Asia, North America. Database

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