Heteroplacidium acarosporoides explained

Heteroplacidium acarosporoides (Mojave stipplescale) is a glossy reddish to dark brown or black squamulose lichen dotted with black perithecia that grows on rock.^{[1] [2]}

Notes and References

1. Field Guide to California Lichens, Stephen Sharnoff, Yale University Press, 2014,
2. Lichen Flora of the Greater Sonoran Desert Region. Vol 1, Nash, T.H., Ryan, B.D., Gries, C., Bugartz, F., (eds.) 2001