Observation 102213: Umbilicaria mammulata (Ach.) Tuck.
When: 2012-07-17
Collection location: Maine, USA [Click for map]
No herbarium specimen

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Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Might consider U. americana, too.
By: Jason Hollinger (jason)
2012-07-19 20:54:21 EDT (-0400)

But it would normally be much more obviously whitish/pruinose-looking. They can apparently be difficult to distinguish at times.

Created: 2012-07-19 20:45:33 EDT (-0400)
Last modified: 2012-07-19 20:53:52 EDT (-0400)
Viewed: 19 times, last viewed: 2017-01-04 02:03:27 EST (-0500)
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