Observation 88089: Candelariella rosulans (Mull. Arg) Zahlbr.

When: 2012-02-19

Collection location: Stebbins Cold Canyon Reserve, Solano Co., California, USA [Click for map]

Who: Byrain

No specimen available

On a rock, I got K+yellow with a q-tip.



Proposed Names

28% (1)
Recognized by sight
31% (2)
Eye3 Eyes3
Recognized by sight: just a guess, see comment

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Not seeing the apothecia, but…
By: Jason Hollinger (jason)
2012-02-22 03:05:52 EST (-0500)

I think the brown thing might be Massalongia carnosa. While we’re at it, there’s the orange Caloplaca (squamosa group maybe?) and some sort of gray bullate Aspicilia behind it all. Not sure if any of that helps understand why the Candelariella (?) is doing its sterile fruticose thing, though.

By: Byrain
2012-02-21 22:51:50 EST (-0500)

I think I see some in image 200671 towards to top. I’ll grab a piece next time I go there. And looking at the pics I noticed it seems to be growing clustered near that drab brown thallus, do you think that could be significant at all?

Finding apothecia would really help
By: Jason Hollinger (jason)
2012-02-21 19:12:24 EST (-0500)

Honestly, more careful K test is unlikely to add information. Your options are K- or slightly reddish, and K+ deep wine-red. You would’ve seen the latter easily with your q-tip test. But seeing apothecia and spores would add a great deal of useful information. Might be worth sending a specimen to Westberg, esp. if you find apothecia.

Sounds like a possibility
By: Byrain
2012-02-21 18:53:01 EST (-0500)

Though I would like to retry the K test with a dissecting microscope and maybe try to find some apothecia. Thanks! :)

Best guess is aberrant form of Canderlariella
By: Jason Hollinger (jason)
2012-02-21 18:40:05 EST (-0500)

Most likely C. rosulans. Considered C. corallizoides (only in Baja), C. spraguei (only in Colorado), C. coralliza (granular coralloid, not in N. Amer.) as well. I’ve seen the rare tiny thallus of C. rosulans do this, but never such an extensive population. Remarkable observation!

By: Jason Hollinger (jason)
2012-02-21 17:01:15 EST (-0500)

I’ve got no clue! I’ll ask around.

Created: 2012-02-21 16:34:38 EST (-0500)
Last modified: 2012-02-21 18:51:33 EST (-0500)
Viewed: 72 times, last viewed: 2018-08-25 20:08:02 EDT (-0400)
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