Observation 94575: Letharia columbiana (Nutt.) J.W. Thomson
When: 2012-04-27
No herbarium specimen

Notes: This lichen was all over on the pine trees. Most of it was high up, but pieces of it were scattered on the ground too, probably after being knocked off by animals.

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Good, I agree
By: Jason Hollinger (jason)
2012-05-13 12:07:07 PDT (-0700)

It’s not uncommon to see the two growing together, but I agree in this case that the two groups seem to be pure. I personally find L. vulpina (or L. lupina but that’s another problem and the species isn’t even “officially” published yet) much more common in southern California.

New photos
By: Evan Casey (EvanCasey)
2012-05-13 11:42:19 PDT (-0700)

I uploaded two more photos of that same branch, but I don’t know if they will help much. I’ll split them into a separate observation if it is different.

When I found them, I just thought some had fruited and others hadn’t, so I’ll have to look more carefully next time. I don’t know anything about identifying lichen though.

Edit: after reading the descriptions and looking at the observations for both species, I split them into this observation 94634. Most of the ones here were collected off the ground and grouped together, so they are probably mixed. Oops!

One photo might be L. vulpina
By: Jason Hollinger (jason)
2012-05-13 11:24:57 PDT (-0700)

See image 218609. No apothecia and I might see soredia.

Created: 2012-05-12 16:12:22 PDT (-0700)
Last modified: 2012-06-25 23:30:05 PDT (-0700)
Viewed: 57 times, last viewed: 2016-10-21 19:44:21 PDT (-0700)
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