Xanthoparmelia teydea, a new brown Xanthoparmelia (Parmeliaceae) from the Canary Islands

Xanthoparmelia teydea is described as new to science. This new species was found on basaltic rocks in the high mountains of the Canary Islands, in El Teide National Park (Tenerife Island). A description of the species is given together with notes on its chemistry, distribution, ecology and taxonomy. Possible associated taxa are briefly discussed.