[Cup Lichens: The Genus Cladonia in the Cascade Mountains of Oregon and Washington]

A cluster of british soldier lichen on jumbled lava blocks in a lava flow near the trailhead for the Butte Camp Trail, Mt. St. Helens.......September 19, 2014. The branched lichen at lower left is possiblythe reindeer lichen (Cladonia rangiferina).

An attractive cluster of british soldier lichens on moss-covered lava along the Pacific Crest Trail #2000 along the western edge of the Big Lava Bed about one-third of a mile south of the Crest Camp trailhead, Gifford Pinchot National Forest........November 7, 2014.

What appears to be Cladonia bellidiflora on mossy lava flows. Photographed along the Pacific Crest Trail 2000 on the west side of the Big Lava Flow about one-quarter mile south of Forest Service Road 60, Gifford Pinchot National Forest.......November 5, 2012.