Observation 203299: Parmotrema crinitum (Ach.) M. Choisy

When: 2013-01-26

Collection location: Oak Mountain State Park, Shelby Co., Alabama, USA [Click for map]

Who: Vitaly Charny (vcharny)

No specimen available

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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This doesn’t look green/yellow enough to have usnic acid
By: Jason Hollinger (jason)
2015-04-25 17:24:07 CEST (+0200)

But we’ve already seen the tricks photos can play on color! Is this growing on bark? If so, and it really isn’t green enough to be P. xanthinum / P. madagascariaceum, then we should consider P. crinitum, another species with conspicuous ciliate isidia. Or maybe even P. mellissii, a species with coarse isidioid soredia mixed with isidia. (I think this clearly has elongate, even branched, isidia, though.)

Created: 2015-04-24 20:44:42 CEST (+0200)
Last modified: 2015-04-27 22:38:40 CEST (+0200)
Viewed: 36 times, last viewed: 2017-06-20 08:53:15 CEST (+0200)
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