Observation 79464: Leptogium palmatum (Hudson) Mont.
When: 2011-09-24
Who: zaca
No herbarium specimen

Notes: This lichen was not the subject of the photos where it appears. It was on the corners of some photos of a Peltigera and I apologize for the bad quality. When I looked into these I came across what seemed like it could be a lichen, but for a long time I did not find anything like that. More recently, casually, browsing through the pages of Irish lichens came across a photograph that I think is of the species that was looking for.

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Good hint!
By: zaca
2011-10-14 00:30:06 CEST (+0200)

I thought that at least the 2nd picture revealed the fruticose character of this lichen, but after seeing some photos by S. Sharnoff, namely photo 4, I realize that the question is not so simple. I will put this into my folder for future observations.

Might consider Leptogium palmatum, too
By: Jason Hollinger (jason)
2011-10-14 00:08:25 CEST (+0200)

My main concern is that this specimen might be foliose, and that it only looks “thorny” because the margins are curled under making it appear terete. C. aculeata is truly terete. Other Cetraria might be possible, too, but all but C. arenaria seem highly unlikely to occur in Portugal. But who knows?

Created: 2011-10-13 23:41:12 CEST (+0200)
Last modified: 2012-01-03 19:19:02 CET (+0100)
Viewed: 42 times, last viewed: 2016-10-22 18:45:39 CEST (+0200)
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