Observation 188014: Lichen P. Micheli

Proposed Names

29% (1)
Eye3 Eyes3
Recognized by sight
29% (1)
Used references: Jason Hollinger tentative ID

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I just sent this specimen to James
By: Jason Hollinger (jason)
2016-01-31 22:58:48 CST (-0500)

At least I think it was this specimen… :)

I was, needless to say, completely stumped by it, even in with specimen in hand.

Jim was stumped with this one. He is still pondering the options
By: Andrew Khitsun (Andrew)
2016-01-31 22:01:31 CST (-0500)
Oh, I think I’ve got it!
By: Jason Hollinger (jason)
2014-11-28 03:42:13 CST (-0500)

Maybe it’s a Stereocaulon. Um. One of the crustose species, maybe? Oh phooey, I don’t know.

The only rock-dwelling isidiate gray species with K- and C- in Lendemer’s sterile crust key is Loxosporopsis corallifera… but it’s only known from the Pacific coast.

Maybe it’s some sort of weird form of a Pertusaria or Ochrolechia.

Just tried K on this.
By: Andrew Khitsun (Andrew)
2014-11-27 23:20:18 CST (-0500)

Surface of isidia is K+ very light green (I know there is officially no color result like this but that’s what it looks like to me). Medula changes color just a tad too. The most pronounced color – dark green – is where I cut through thallus, so the inner space of cortex where cut, however thin, stands out for its dark color against other parts of lichen.

Okay, don’t panic…
By: Jason Hollinger (jason)
2014-11-27 21:05:38 CST (-0500)

What about K? There are relatively few sterile isidiate crusts, we should be able to narrow this down quickly…

No response to C :-((
By: Andrew Khitsun (Andrew)
2014-11-27 20:58:11 CST (-0500)
I’m only slightly better off than you…
By: Jason Hollinger (jason)
2014-11-27 13:12:00 CST (-0500)

I know where to start guessing, at least! :) Try Ochrolechia yasudae… is it C+ red by any chance? (Would be extremely unsubtle if my guess is right.)

I don’t even know where to start guessing :-(
By: Andrew Khitsun (Andrew)
2014-11-11 01:26:00 CST (-0500)

Created: 2014-11-11 00:13:30 CST (-0500)
Last modified: 2015-01-24 01:46:19 CST (-0500)
Viewed: 61 times, last viewed: 2017-06-19 08:31:15 CDT (-0400)
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