Bulbothrix laevigatula (Nyl.) Hale
Phytologia 28, 5: 480 (1974).
Basionym: Parmelia laevigatula Nyl., Flora, Regensburg 68: 614 (1885).
Thallus: adnate, whitish mineral gray, turning cream- buff in the herbarium, 4-9 cm in diameter; lobes irregularly branched, sublinear- elongate, 0,5-2 mm wide, the marginsmore or less than 0,2 mm long, shiny, often apically branched, less than 0,3 mm high; lower surfache black, densely rhizinate, the rhizinesdensely and finely branched, forming a woolly mat. Apothecia adnate, 1-5 mm wide, margins crenate and undulate, amphitecium rugose, ecoronate, isidiate; spores 8, 3-4 X 5-7 µm.