Observation 65783: Physcia caesia (Hoffm.) Fürnr.
When: 2011-04-17
Who: zaca
No herbarium specimen

Notes: Maybe it is a Physcia caesia, which was often mentioned in previous observations of specimen of the genus Physcia. Who knows?

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Recognized by sight
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As I said …
By: zaca
2011-04-21 06:06:40 CDT (-0400)

.. in the notes that was also my impression about the classification, but I could be being influenced by other recent observations of specimens of the same genus. Thanks, Jason, for confirmation.

I agree
By: Jason Hollinger (jason)
2011-04-20 21:07:50 CDT (-0400)

I would vote for P. caesia this time. It has the typical “look and feel” of the species: strongly convex distinct lobes with a roughened appearance, piles of darkened soredia (usually bluish, but grey is not unusual in specimens exposed to direct sun) sitting on lobe surface.

Created: 2011-04-18 18:04:41 CDT (-0400)
Last modified: 2011-04-21 06:05:41 CDT (-0400)
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