United States, Idaho, Bonner, Hanna Flat Nature Trail, vicinity of Nordman
48.63381 -116.945774 +-800m.
on thin soil
homosekekaic acid in TLC, also note morphological differences with C. verruculosa, with which it is often confused in C. rei: 1) subulate apices, dichotomous, not pseudomonopodial branching, and 3) entirely sorediate