. . . . . . . . "Clavascidium umbrinum, also known as Catapyrenium umbrinum, is a lichen. It is characteristically 2 to 4 millimeters wide and medium to dark brown found on soil. Found in Europe and North America; rather rare in Arizona, California, Chihuahua and Baja California."@en . "Clavascidium umbrinum, also known as Catapyrenium umbrinum, is a lichen. It is characteristically 2 to 4 millimeters wide and medium to dark brown found on soil. Found in Europe and North America; rather rare in Arizona, California, Chihuahua and Baja California."@en . . . "1068"^^ . . . . "Breuss, 1996"@en . "Clavascidium umbrinum"@en . . . . "1008748624"^^ . . "52405953"^^ . . "Clavascidium umbrinum"@en . .