Observation 67011: Lichen P. Micheli
When: 2009-07-14
No herbarium specimen

Proposed Names

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Recognized by sight

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Comments

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I agree, it does look like Pyrenula
By: Jason Hollinger (jason)
2011-05-12 06:55:17 CEST (+0200)

But, yeah, I don’t know if any grow on rock.

Pyrenula pseudobufonia
By: Andrew Khitsun (Andrew)
2011-05-12 04:26:04 CEST (+0200)

Would be a nice fit for the darker one – it’s basically a look-alike. The only problem is the rock – P.pseudobufonia seems to be exclusively bark-dwelling :-(

I like side-by-side comparisons like this.
By: Jason Hollinger (jason)
2011-05-07 04:07:43 CEST (+0200)

I used to think that was really the only way to really understand the difference between similar species: see them growing side-by-side in the identical conditions. Then there is no question of whether both specimens are the same species but reacting differently to different conditions. Nope, if they’re side-by-side and still look different, chances are excellent you’ve really got something different!

(Of course, lichens can still be confounding even in such clear-cut cases. They don’t necessarily share the same history, and events at establishment can initiate totally different “systems” resulting in one being totally different than the other. Perfect example is cyanomorph growing on top of chloromorph, e.g., Dendriscocaulon or Peltigera britannica. So different people long thought they were different genera, yet there they are growing literally on top of one another. One just happened to capture a cyanobacterium at establishment, the other a green alga. Go figure.)

Wasn’t sure.
By: Andrew Khitsun (Andrew)
2011-05-07 03:56:06 CEST (+0200)

I wasn’t sure if darker areas in the first photo are part of the same species gone dark for whatever reason or incursion of the second species identical to or similar to the second photo. That’s one of the reasons I included both in one observation.

Ugh, more black dots!
By: Jason Hollinger (jason)
2011-05-07 03:01:30 CEST (+0200)

You’d make a fabulous lichenologist, nothing is so prosaic it escapes your attention! :) I’ve certainly seen these nice shiny-button devils before, or ones just like these. One useful note: you can see both species growing together in the first photo — looks like one has white thallus, the other brownish thallus. Yes, they could easily be Buellia. Or Sarcogyne or Lecidea or Porpidia or … (!)

Different species
By: Andrew Khitsun (Andrew)
2011-05-07 02:12:02 CEST (+0200)

These two look like different species to me, but I failed to identify either one. They might be Buellia sp. or something else. When someone provides some IDeas of what it might be, I’ll separate them if necessary.

Created: 2011-05-07 02:07:58 CEST (+0200)
Last modified: 2011-05-07 02:09:57 CEST (+0200)
Viewed: 66 times, last viewed: 2016-03-30 07:13:17 CEST (+0200)
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