Observation 50795: Xanthoparmelia coloradoënsis (Gyelnik) Hale

Identification: A Xanthoparmelia without isidia or soredia. Note that the undersides of some of the lobes are quite black.

Species Lists



Proposed Names

-28% (1)
Used references: McCune and Geiser, 2009, pp.384-390
28% (1)
Eye3 Eyes3
Used references: McCune and Geiser, 2009, p.387

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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alpine specimens
By: Jason Hollinger (jason)
2010-08-20 03:11:32 CDT (-0400)

…of all sorts of species tend to be blacker than comparable specimens at lower elevations. Who knows, maybe Xanthoparmelia, too. Hmmm, I’m looking at one of mine from the alpine, though, and it shows pretty typical tan underside. There’s a guy in Salt Lake city doing work on these things, maybe we’ll know more in a year or two.

Xanthoparmelia coloradoensis?
By: Chris Parrish (kitparrish)
2010-08-20 01:55:32 CDT (-0400)

I certainly thought it was Xanthoparmelia coloradoensis … could be the twin brother of the photo in McCune and Geiser, 2009, p.387 … until I saw the black lower cortex. Brodo mentions that wyomingica can show some black below, so maybe coloradoensis can as well.

By: Jason Hollinger (jason)
2010-08-20 01:41:18 CDT (-0400)

…shouldn’t be black underneath, though. Only species mentioned in my notes for Ways of Enlichenment that is [broad-lobed, black underneath, no soredia or isidia] is Xanthoparmelia tasmanica. It is listed as rare, from semi-arid interior regions, including western Montana. Medulla should be K+ yellow turning orange or red, but that is also true of many other species, including X. coloradoensis.

Created: 2010-08-19 23:46:29 CDT (-0400)
Last modified: 2010-08-20 01:56:50 CDT (-0400)
Viewed: 171 times, last viewed: 2018-04-12 15:06:27 CDT (-0400)
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