Observation 112990: Collema subnigrescens Degel.
When: 2012-10-06
Who: zaca
No herbarium specimen

Notes: Another novelty from this location.

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Recognized by sight

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I’d say you know a little about Collema!
By: Jason Hollinger (jason)
2012-10-10 13:43:59 CDT (-0400)

You have the most amazing gallery of observations. It’s hard to get good experience with Collema… unless you live in a region with lots of limestone like you do. If you say this isn’t C. furfuraceum, then I’m inclined to believe it!

Not that I know anything about Collema…
By: zaca
2012-10-10 13:31:05 CDT (-0400)

but I ruled out Collema furfuraceum (as well as C. nigrescens) on the
basis of the lack of isidia (even with the full magnification of the
photo I couldn’t find any isidia or isidia-like structure).

Not that I know anything about Collema
By: Jason Hollinger (jason)
2012-10-09 19:09:31 CDT (-0400)

But I’m curious how you rule out Collema furfuraceum?

Created: 2012-10-09 18:56:10 CDT (-0400)
Last modified: 2012-10-09 18:56:11 CDT (-0400)
Viewed: 22 times, last viewed: 2014-03-08 14:32:41 CST (-0500)
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