Bull. Soc. Linn. Normand., Sér. 2, 4: 154 (1870)
Protolog: Data lacking.
Protolog type data: Data lacking.
Type locality: Spain, Canary Islands, Gran Canaria, sur les dunes de sable mouvants à Maspaloma supra aren. mobilem (H-Nyl 37085) [Salazinic acid, triterpenoids (trace)] (Krog & Østhagen 1980: 267).
Type locality coordinates: Data lacking.
Molecular barcode: Data lacking.
Thallus: rigid, fragile, ascending or subpendulous, up to 8 cm long, with few to several laciniae from a broad holdfast; branching dichotomous, palmate, or irregular, secondary branches occasionally developing onesidedly and comb-like from the margin of main branch, ultimate branches often finely divided to give a multifidous appearance. Laciniae straminous, rarely yellow-brown or grey-green, matt or more often shiny, sublinea-linear or of uneven width, flat, 2.5 - 5 - 10 mm broad near the base, 0.3 - 0.5 - 2 mm apically, entirely smooth and even, or weakly reticulately ridged along their length, or smooth and even from the base with reticulations restricted to distal parts, or rarely with a few transverse cracks and ridges, margins straight or undulate, apices rounded or truncate, often recurved, sometimes faintly pruinose. Pseudocyphellae linear, marginal, common, often bordered by tubercles and lateral branchlets which, when broken, give the margins a gnawed appearance. Soralia absent. Cortex 40 - 70 µm thick, chondroid cylinder absent, medulla dense, with few to several imbedded strands of chondroid tissue. Pycnidia mainly marginal, with pale ostioles. Apothecia sparse to numerous, lateral, subapical, or apical, thalline exciple smooth or laciniate, thalline margin crenate, disc up to 8 mm in diameter, concave or flat, often radially split or incised, spores 10 - 14 - 16 / 3 - 5 µm.
Photobiont: Data lacking.
Chemistry:
Ecology: saxicolous. In well lit sites, often on vertical rock faces, in the Canary Islands between 300 and 700 m altitude (Krog & Østhagen 1980: 267).
Distribution Type: Data lacking.
Note:
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Chemical race 1: Salazinic acid, triterpenoids, more or less bourgeanic acid.
Chemical race 2: Triterpenoids, bourgeanic acid (rare) (Krog & Østhagen 1980: 267).