Observation 160097: Punctelia caseana Lendemer & Hodkinson

Proposed Names

-27% (2)
Recognized by sight
-2% (2)
Used references: ID provided by Jim Bennett

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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After all, P.borreri was shot down in favor of P.caseana
By: Andrew Khitsun (Andrew)
2014-07-07 19:58:19 CDT (-0400)
By: Jason Hollinger (jason)
2014-06-26 03:59:25 CDT (-0400)

It would probably be a useful study to see the specimen again. P. borreri is supposed to have a black lower surface. But that’s (obviously!) not always an easy character to diagnose. I better pay more attention to that as well, because otherwise this could easily be P. caseana. Who knew?

Jim Bennett provided ID Punctelia borreri
By: Andrew Khitsun (Andrew)
2014-06-25 22:36:23 CDT (-0400)

And he says this is a second state record. Medula C+ red, cortex K+ yellow.

Don’t be hard on yourself
By: Jason Hollinger (jason)
2014-02-21 21:21:58 CST (-0500)

I always get this one wrong at first in the field. It’s not until I see the K+y cortex that I usually catch my mistake. It’s not very “Punctelia-like”, is it?

Shame on me for not recognizing Punctelia
By: Andrew Khitsun (Andrew)
2014-02-21 21:05:47 CST (-0500)

I only had one specimen in the past of P.caseana, and that one was totally different, craggy looking thing on a stick.

The color fooled me, too
By: Jason Hollinger (jason)
2014-02-21 20:07:17 CST (-0500)

I thought you were right.

There is a form of Punctelia caseana in high elevations of Smokies that grows really large and Cetrelia-like like this. Oh wow, yes, look how similar this is to yours: observation 99965. And it’s pale brownish underneath the way you describe. It should be very weakly C+ fleeting pink in the medulla, but I don’t think I’d let a negative reaction change my opinion.

Things just don’t match
By: Andrew Khitsun (Andrew)
2014-02-20 21:54:14 CST (-0500)

Lower surface white to light brown, short abundant rhizines. Upper surface with pronounced “burnt” edges. Upper cortex reacts yellow to K+, but not medula.

Created: 2014-02-20 21:43:01 CST (-0500)
Last modified: 2014-07-07 19:56:00 CDT (-0400)
Viewed: 52 times, last viewed: 2017-06-18 00:34:55 CDT (-0400)
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