Observation 188955: Physciella chloantha (Ach.) Essl.

Proposed Names

29% (1)
Recognized by sight
92% (2)
Eye3 Eyes3
Used references: Jason Hollinger ID

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Eye3 = Observer’s choice
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Jim Bennett first thought it was a pale form of Phaeophyscia pusilloides too,
By: Andrew Khitsun (Andrew)
2016-03-07 21:14:09 CST (-0500)

but then he changed his mind in favor of Physciella chloantha

By: Andrew Khitsun (Andrew)
2015-05-07 20:00:17 CDT (-0400)

But the lower surface is pure-white, not off-white.

Well, we wouldn’t be doing our job unless…
By: Jason Hollinger (jason)
2014-11-29 02:43:18 CST (-0500)

…we at least considered Phaeophyscia. Could it be a pale population of Phaeophyscia orbicularis?

Then this must be Physciella chloantha
By: Jason Hollinger (jason)
2014-11-29 02:40:47 CST (-0500)

You’re probably right about H. speciosa and the labriform soralia. Admittedly it didn’t look quite right to me, either. But it doesn’t look “quite right” for Physciella, either, and there it is anyway. Pretty cool!

K- everything,
By: Andrew Khitsun (Andrew)
2014-11-29 00:38:06 CST (-0500)

although due to my color perception sometimes I “see things” (or don’t). Heterodermia is very rare here, and I don’t know that genus well (or at all), except I thought H.speciosa should have labriform soralia?

Have you tried Heterodermia speciosa?
By: Jason Hollinger (jason)
2014-11-28 03:50:48 CST (-0500)

I agree this looks wrong for Physcia americana. Did you mean to say this has a K- medulla or K- cortex? If the latter, the Physciella is very plausible. Remarkable specimens, though, if so.

It keys out to P.americana using Thomson Lichens of Wisconsin
By: Andrew Khitsun (Andrew)
2014-11-19 00:18:04 CST (-0500)

But I feel that I missed the turn somewhere and used wrong key. The end result was odd, and K test didn’t show any results even though in P.americana it’s K+ yellow. Using keys in Brodo I arrived to Physciella chloantha which doesn’t make sense either. Lower surface white. Grows on dolomitic limestone of Niagara Escarpment. I will accept any suggestions. Also compare with P.americana observation 188867.

Created: 2014-11-18 23:05:23 CST (-0500)
Last modified: 2016-03-07 21:14:25 CST (-0500)
Viewed: 72 times, last viewed: 2016-10-21 18:49:58 CDT (-0400)
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