A foliose species with a large, yellow-brown to brown thallus that is slightly shiny. The lobes are long and narrow, somewhat convex and not or only slightly widening at the rather square-cut tips. The lobe surface has slight transverse wrinkles. Coarse spherical isidia form conspicuous cauliflower-like clusters that may become confluent and erode to leave prominent white scars.
Cortex: K-. Medulla: C+- red, UV+ white
In Scotland, Xanthoparmelia loxodes occurs along the west coast and the central east coast where it is found on siliceous rock. BLS distribution map
scottishlichens.co.uk 