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Notes:
HABITAT along narrow east-west ridge; SUBSTRATE siliceous rock; ASPECT sunny; NOTES C+r but relatively weak, maculate, coarse pustules turning into soredia, simple rhizines near margins, not ciliate

Images

20110524-50.jpg

Proposed Names

87% (1)
Recognized by sight: extensively exposing black underside where pustules have flaked off
Based on chemical features: TLC plate 111 lane 18: atranorin + gyrophoric + two spots in the hiascic complex, one at norstictic and one just above the high spot in showmanii

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= Observer’s choice
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Comments

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This one works out perfectly
By: Jason Hollinger (jason)
2021-07-14 20:04:42 CEST (+0200)

The TLC signature and morphology are both exactly right. It’s hard to see in the photo, but the pustules are flaking off and exposing the black underside extensively in the specimen I have in front of me.