Caloplaca cerina forme ramicole.

      Discontinuous thallus, lumpy, pale greenish-grey, whitish-grey, resting on a sometimes very important blackish hypothallus. Apothecia scattered, disk orange, yellow,... margin smooth, white, whitish to greyish-white. Spores according to our measurements: (10) 12-15 x (5) 6-8 µm, with a septum of 5-9 µm. Quite common on the branches of trees and shrubs with smooth bark: Ulmus, Fraxinus, Crataegus, ...