Xanthoparmelia californica

Xanthoparmelia californica a one a the foliose lichen in the genus Xanthoparmelia (family Parmeliaceae), collectively referred to as Rock-Shield Lichen. The genus had previously been known as Almbornia, Neofuscelia, Chondropsis, Namakwa, Paraparmelia or Xanthomaculina, but this particular species has not been described until 1984 (Hale, 1984)