Thallus foliose, forming rosettes <20cm, upper surface blue-grey, undulate margins, dense cover of globose isidia (later claviform cilindrical). Lower surface brown-black. Apothecia very rare.
Altitude: 560 m
Ecology, geology: Hornblende-biotite granodiorite, Carboniferous-Permian
Location: Around the Church of Santa Helena , Port de la Selva (Alt Empordà)
Climate: North coast Mediterranean climate (Tmm=14.7ºC, AT=15ºC, 485 mm)
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