Xanthoria polycarpa “Pincushion Xanthoria”
Council Grove State Park, MT
March 16, 2015
This lichen is relatively common on the old twigs of Populus and Pinus in open, nutrient-enriched areas (e.g. cow pastures) of the PNW. On angiosperm twigs, they tend to grow in a small pincushion-like form no more than 25mm across.