Growing on a stone bridge with several other lichen species and moss. A creek regularly visited by waterfowl and other animals runs underneath it.
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you should at least find a few areoles that have small dark depressions in the centers. This is where the fungal reproductive parts are found. Like with most lichen groups, spore size/shape and the standard chemical spot test results are probably the best features to focus on. There are many species in the genus (over 60 in North America, at least 15 confirmed for California).
…take better pictures of this one now that I have a tripod, what chemical/microscopic features may help narrow this down?
Aspicilia would be my inclination.
I can’t find apothecia, perithecia, soredia, anything.
Created: 2011-05-23 19:38:26 PDT (-0700)
Last modified: 2011-05-23 19:38:27 PDT (-0700)
Viewed: 56 times, last viewed: 2017-06-09 10:50:59 PDT (-0700)