Observation 204821: Ochrolechia subpallescens Verseghy, Beih.

When: 2015-05-21

Collection location: Paso Robles, California, USA [Click for map]

35.6282° -120.8831° 1150m

Who: J-Dar

No specimen available

On Coast Live Oak (Quercus agrifolia) trunk bark, in mixed oak forest.

Proposed Names

-28% (1)
Recognized by sight
28% (1)
Recognized by sight: definitely the right genus, do you have UV?, also C test on apothecium section will be necessary, I think…

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I’ll have to find some time to review Brodo,
By: J-Dar
2015-05-25 18:06:21 CDT (-0400)

as suggested. I saw some of the species in CNALH for this area weren’t in Nash Sonoran Flora keys. That light is cheap, very nice! Much appreciated.

This is the lamp I recommend
By: Jason Hollinger (jason)
2015-05-23 16:06:55 CDT (-0400)


Not every lamp works equally well. It’s hard to be sure that it emits around 350nm. This is especially important with LED lights. None of those work in my experience. These fluorescents are better — they have very broad emission spectrums.

But ask Zaca and Andrew about their experience with this lamp. I don’t know what to say. Every one I’ve bought — and I’ve bought and given away a dozen or more — has worked fine for me… :(

Also, I think you still have the link to my scanned literature: there are a bunch of Ochrolechia along the CA coast, not all covered in the Sonoran Flora. I think O. subpallescens is very likely, but if you’d like to boost your confidence (and see the full complexity of the genus!) check out Brodo’s treatment of the corticolous species of North America. (No one’s really done the saxicolous species in western N.A., unfortunately.)

What is best UV
By: J-Dar
2015-05-23 12:51:24 CDT (-0400)

What is the best, or most readily available, bulb type?

See new Observation
By: J-Dar
2015-05-23 12:50:03 CDT (-0400)

observation 204833 is a collection from a deciduous valley oak 20 feet from this photograph on a live oak. I thought they were the same species and grabbed one for later review at home. That one seems to go to Ochrolechia subpallescens based on micro and chemical features. I’ll have to go back and collect the one photographed here from live oak and test it, and will update this observation.

By: J-Dar
2015-05-22 23:28:06 CDT (-0400)

Created: 2015-05-22 23:13:49 CDT (-0400)
Last modified: 2015-10-17 20:39:09 CDT (-0400)
Viewed: 73 times, last viewed: 2017-06-20 04:33:47 CDT (-0400)
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