Observation 113604: Parmelia sulcata Taylor
When: 2012-10-13
Who: zaca
No herbarium specimen

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I see them
By: Jason Hollinger (jason)
2012-10-17 12:24:06 PDT (-0700)

You’re probably right. And besides the other more subtle characters I’ve read about also point to P. sulcata: P. barrenoae should have more strongly eroded soralia which cause the thallus to curl up away from the substrate more.

I think it was not yet this time …
By: zaca
2012-10-17 12:01:05 PDT (-0700)

that I found P. barrenoae. Though not clear enough there is a place in the last photo (a bit up and to the left of the center) where some rhizines are visible and they seem to me just the ordinary squarrose of P. sulcata.

Interesting that P. barrenoae is apparently so rare there
By: Jason Hollinger (jason)
2012-10-16 15:01:57 PDT (-0700)

It was described from your region! But almost every one of your observations have been P. sulcata. In most of them (not this one, though) you can clearly see squarrose rhizines even, leaving no room for doubt. Odd.

Created: 2012-10-16 14:30:05 PDT (-0700)
Last modified: 2012-10-16 14:30:09 PDT (-0700)
Viewed: 33 times, last viewed: 2016-10-24 08:31:12 PDT (-0700)
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