Observation 95806: Xanthoparmelia cumberlandia (Gyelnik) Hale
When: 2012-05-27
(46.896° 119.3702° 753m)
No herbarium specimen

Notes: Substrate: basaltic rocks. Totally exposed.

Habitat: sagebrush steppe, about 50 feet away from Umptanum Creek, about 50 feet elevation difference.

Description: Kinda look like Xanthoparmelia coloradoensis. Underside is light brown, rhizines are light colored, <1mm, look single, but many look to have little tiny spherical knobs or a tiny dicotomous branch on the tip top for extra gripping power.

Medulla P+O, K+Y:

In the Xanthoparmelia coloradoensis, how easy does does it need to be to pull the lobes off the rock? Cause with this sample my finger nails work, but a fw parts near the terminal margin hang on, while the rest of the lobe will peel off.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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I don’t think so
By: Jason Hollinger (jason)
2012-05-30 17:56:42 PDT (-0700)

I know X. coloradoensis is very often sterile (although note the abundant black pycnidia). I have lots of pictures of sterile X. cumberlandia, as well. Or at least what I called X. cumberlandia! :)

By: nastassja (Nastassja Noell)
2012-05-30 17:27:12 PDT (-0700)

Good call, and memory. Does it matter that apothecia aren’t common? (as Nash states in his description), not present from my memory, but the carbonization seems to indicate some harsh conditions, so maybe that’s why no apothecia. Posting up a picture showing all the others clustered around, there were alot, pretty neat little guys.

K+y probably means X. cumberlandia
By: Jason Hollinger (jason)
2012-05-30 12:07:18 PDT (-0700)

Both it and X. coloradoensis are usually pretty loose and “tangled”, just like yours.

Yes, even “simple” rhizines branch and do weird things at the tip where they’ve attached to the substrate. This is why it’s best to check around the margins first, look for rhizines that haven’t touched anything yet.

Created: 2012-05-30 00:55:51 PDT (-0700)
Last modified: 2012-05-30 17:16:22 PDT (-0700)
Viewed: 54 times, last viewed: 2016-10-23 23:12:12 PDT (-0700)
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