Powdered Sunshine Lichen
Vulpicida pinastri
Vulpicida pinastri is a grayish, yellow to yellow-green foliose lichen in the Parmeliaceae.
Usually it is easily recognized by the characteristic bright yellow color of the primarily marginal soralia, which contrast with the duller, more grayish or greenish yellow of the rest of the upper surface. The width, arrangement, and especially the adnation, of the lobes are somewhat variable; morphs with very narrow, crowded and appressed lobes can occasionally (especially if heavily sorediate) be confused with coarse forms of Candelaria concolor, but in that species (which is more common at lower elevations and in rather dry sites), the upper surface has virtually the same bright yellow color as the soredia.
Usually it is easily recognized by the characteristic bright yellow color of the primarily marginal soralia, which contrast with the duller, more grayish or greenish yellow of the rest of the upper surface. The width, arrangement, and especially the adnation, of the lobes are somewhat variable; morphs with very narrow, crowded and appressed lobes can occasionally (especially if heavily sorediate) be confused with coarse forms of Candelaria concolor, but in that species (which is more common at lower elevations and in rather dry sites), the upper surface has virtually the same bright yellow color as the soredia.