Observation 203086: Arthonia elegans (Ach.) Almq.

When: 2015-04-18

Collection location: Planalto das Cezaredas, Portugal [Click for map]

Who: zaca

No specimen available

Growing on the bark of an oak tree.

Proposed Names

-87% (1)
Recognized by sight
87% (1)
Eye3 Eyes3
Used references: British Flora: Smith et al. (eds), The Lichens of Great Britain and Ireland, The British Lichen Society, 2nd ed., 2009.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I was well deceived;
By: zaca
2015-04-21 13:29:53 CDT (-0400)

After all it was not Arthonia cinnabarina but his cousin A. elegans.
In fact, it reacts K+ purple/violet (quickly disappearing) and has much smaller and less sepate spores. It was observed in a place visited for the first time and I was astonished with the amount of specimens existing there, which I thought to be all A. cinnabarina. So, either the two species are mixed or this is the lair of A. elegans. I uploaded some photos showing the proliferation of specimens at the trunks of some oaks.

Created: 2015-04-20 16:26:30 CDT (-0400)
Last modified: 2015-04-21 13:32:13 CDT (-0400)
Viewed: 45 times, last viewed: 2018-04-16 10:01:32 CDT (-0400)
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