Observation 106189: Parmotrema A. Massal.

When: 2012-08-20

Collection location: Augusta, Georgia, USA [Click for map]

Who: GA noiz (ganoiz1016)

No specimen available

Proposed Names

26% (2)
Recognized by sight
56% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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By: Jason Hollinger (jason)
2012-08-20 11:20:49 MST (-0700)

I think. It has those broad rounded lobes and general look of a Parmotrema. Since it is fertile and lacking (?) soredia or isidia, that leaves only these two species. KOH on the inner medulla would distinguish the two species: P. performatum is K+ yellow to deep blood-red quickly; P. michauxianum is K-. (Also you might verify that it doesn’t have a dense network of fine little cracks all over the upper surface, which would indicate Rimelia cetrata.)

Created: 2012-08-20 07:46:50 MST (-0700)
Last modified: 2012-08-20 10:10:30 MST (-0700)
Viewed: 12 times, last viewed: 2017-06-13 19:06:59 MST (-0700)
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