Observation 68222: Rhizocarpon furfurosum H. Magn. & Poelt

When: 2011-05-21

Collection location: Serra de São Mamede, Portugal [Click for map]

Who: zaca

No specimen available

Although the interior of thallus is unusual for the genus Rhizocarpon the prothallus fits very well in this genus. The difficulty in identifying was the absence of apothecia and the lack of references on the internet. Must be an unusual sort, since I only found one picture of it, but this seems to me to be conclusive.

Proposed Names

58% (1)
Eye3 Eyes3
Used references: British lichens
Based on chemical features: All chemical reactions negative.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I agree, it is distinctive and very similar to the photos
By: Jason Hollinger (jason)
2011-05-29 12:50:14 PDT (-0700)

If it is sorediate, then it wouldn’t be surprising to mostly find it without apothecia. Don’t judge by photos on the web: give the choice between a dozen normal photos without apothecia and a single photo with apothecia, I’ll generally post the one with apothecia!

It´s strange …
By: zaca
2011-05-29 12:40:25 PDT (-0700)

… but possible. Unfortunately, I couldn’t find a description of it, only the photo in British lickens. However, the exterior part of the thallus and the prothallus fits very well in a Rhizocarpon.

Interesting, Rhizocarpon with isidia/soredia?
By: Jason Hollinger (jason)
2011-05-29 06:45:19 PDT (-0700)

Just checked, we don’t have anything of the sort here in North America.

Created: 2011-05-28 11:04:43 PDT (-0700)
Last modified: 2011-05-28 11:04:45 PDT (-0700)
Viewed: 120 times, last viewed: 2017-12-17 09:24:46 PST (-0800)
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