Observation 60529: Lichen P. Micheli
When: 2010-12-02
No herbarium specimen

Proposed Names

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I don’t know!
By: Jason Hollinger (jason)
2010-12-11 22:27:21 EST (-0500)

For whatever it’s worth, notice the apothecia. See how they’re sunken into the thallus flush with the surface? This is a character called “aspicilioid” because Aspicilia has many species that do this. But the orange color is highly unusual. It would be interesting to know what kind of pigment causes it — is it K+ red (anthraquinone)?, does it fluoresce in UV? (some sort of xanthone?), or is it just picking up iron from the substrate (a few species of Porpidia do that). But without seeing a spore I wouldn’t even know where to start.

You’re right
By: Alok Mahendroo (alok)
2010-12-11 11:44:43 EST (-0500)

It does look different and I see what you mean by the margin… but then what??

Wow, what a lichen!
By: Jason Hollinger (jason)
2010-12-10 21:14:36 EST (-0500)

This looks a lot like Ionaspis lacustris… only, now that I look carefully, that species does not have the lobate margin that yours does. Actually, that margin could well rule out the genus entirely. Still take a look:

http://www.stridvall.se/lichens/gallery/Ionaspis

Created: 2010-12-09 13:01:04 EST (-0500)
Last modified: 2010-12-09 13:01:08 EST (-0500)
Viewed: 42 times, last viewed: 2016-05-12 04:52:51 EDT (-0400)
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