Observation 66325: Flavoparmelia soredians

When: 2011-04-19

Collection location: Marteleira, Lourinhã, Portugal [Click for map]

Who: zaca

No specimen available

Growing in a log of an old tree used as a delimiter in a garden.


Underside of lobes (top) and chemical reactions (bottom).

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That was my first guess …
By: zaca
2011-04-26 16:19:17 CDT (-0400)

… which was supported by the chemical reactions but, in fact, I was not sure about the genus, so I didn’t mention that species. Thanks, Jason, for your oppinion.

I stand corrected
By: Jason Hollinger (jason)
2011-04-26 16:12:08 CDT (-0400)

F. soredians is K+red. Yet another example of North American experience failing to transfer 100% to Europe! My apologies.

Not Flavoparmelia , but…
By: Jason Hollinger (jason)
2011-04-26 16:02:31 CDT (-0400)

… I’m having trouble coming up with better suggestions. Flavoparmelia should look more green, no matter what the lighting is like, and should never be K+ red (all are K- C- KC+ pink I think). Canoparmelia (e.g., C. texana) is also KC+ pink (but otherwise looks very similar). Parmotrema can definitely be K+r, but I don’t know any with diffuse fine soredia like that. I notice it has yellowish to orangish pigment in the medulla in places. That may suggest something like Myelochroa, but no species that I know of looks like that. I’m running out rapidly. Xanthoparmelia can look essentially gray like this, but sorediate species are few and far between, and even then not diffuse soredia like this, I think. Wrong shape for Hypotrachyna. Maybe there’s a Lobaria in the L. quercizans group with soredia like this in Europe?? I’m stumped.

Created: 2011-04-26 12:46:58 CDT (-0400)
Last modified: 2011-04-26 16:24:35 CDT (-0400)
Viewed: 42 times, last viewed: 2019-08-26 08:57:53 CDT (-0400)
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