Observation 85743: Lichen P. Micheli
When: 2011-01-24
Who: zaca
No herbarium specimen

Notes: It look’s like a Physcia to me, but it can belong to other genus. This is the only material I have from this observation.

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As I mentioned …
By: zaca
2012-01-06 19:32:05 EST (-0500)

I have no other material from this observation. Physconia and Pyxine seem good candidates for the genus. About the UV light, I still don’t have it.

Looks like Physconia or Pyxine to me
By: Jason Hollinger (jason)
2012-01-06 13:49:59 EST (-0500)

Have you done spot tests on it? Do you have a UV light, by the way? Ideally you want 350 nm but that’s hard to get. It’s really easy to order 375 nm on-line, and that will at least tell you if lichexanthone is present, which would be potentially helpful for this observation. (UV 375 nm would also be useful for other xanthones, such as in Pertusaria and Ochrolechia, too.)

Created: 2012-01-05 15:36:30 EST (-0500)
Last modified: 2012-01-05 15:36:31 EST (-0500)
Viewed: 17 times, last viewed: 2014-03-05 23:11:24 EST (-0500)
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