in Østhagen & Krog, Norw. J. Bot. 23: 239 (1976).

Type: Spain, Canary Islands, Gran Canaria, Baranco de Meca ca. 1 km S of Ayacata, 1300 m, Krog & Østhagen 74 (O - holotype; BM, TFMC, UPS - isotypes) [TLC: salazinic acid].

Thallus: erect to subpendulous, rigid, fragile, 1 - 3 - 6 cm long, with a number of irregularly and intricately branched laciniae from a common holdfast. Laciniae stramineous to yellow-green, turning pale brown in basal parts; narrow and terete or broad and more or less cup-shaped proximally, terete, flat, or distorted distally, here and there widening into hollow swellings which split open and become flattened, temporarily exposing the medulla; fenestrations numerous, apical parts dilacerate. Pseudocyphellae absent. Soralia absent, but upper side of laciniae with numerous laminal, corticate granules. Cortex compressed, indistinct, chondroid tissue dominating, sometimes filling the entire cross section of a branch, medulla covering inside of hollow swellings and imbedded together with algal cells as isolated groups in the chondroid tissue, giving the surface a nodular or warty appearance. Pycnidia not seen. Apothecia rare, lateral, stipitate, thalline exciple nodulose, disc up to 4 mm in diameter, slightly convex, mature spores not seen. Pycnidia unknown (Krog & Østhagen 1980: 292).

Chemistry: Cortex usnic acid, medulla salazinic acid, more or less traces of protocetraric acid.
Ecology: Saxicolous.