Growing on dry granite with numerous other lichens. Very common. 3000m elevation

[admin – Sat Aug 14 01:59:49 +0000 2010]: Changed location name from ‘Darwin Canyon, Kings Canyon National Park, California, USA’ to ‘Darwin Canyon, Death Valley National Park, California, USA’


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Can’t quite see the apothecia
By: Jason Hollinger (jason)
2010-07-29 13:58:33 CDT (-0400)

U. krascheninnikovii and U. proboscidea are nearly identical except for the apothecia: the former has smooth disks, the latter “gyrose” (a contorted ridged/fissured texture). Oh, and it looks like there are two analogous species which are “sooty” underneath, U. decussata and U. lyngei. What a mess.