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sum(score * weight) /
(total weight + 1)
Don’t know if it is helpful to speculate wildly. Rock in the woods makes me think Porpidia, perhaps something like P. tuberculosa, which is variable in appearance.
I would need a closer look at the soralia (assuming there are any… maybe it’s got really inconspicuous apothecia??), and K and C tests would probably help a lot, too (that’s how the keys to sterile crustose lichens are structured: first couplets usually narrow it down by chemistry, then branch off into type of soralia, substrate, habitat, and geographic regions).
Created: 2012-03-28 12:42:26 PDT (-0700)
Last modified: 2012-03-28 12:42:29 PDT (-0700)
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