Observation 192287: Caloplaca sideritis (Tuck.) Zahlbr.

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ID confirmed by J.Bennett
By: Andrew Khitsun (Andrew)
2015-08-11 20:07:21 PDT (-0700)
So be it.
By: Andrew Khitsun (Andrew)
2014-12-07 17:31:16 PST (-0800)

Thomson lists C.sideritis in Wisconsin south of the tension zone (that’s where we are).

By: Jason Hollinger (jason)
2014-12-07 17:13:06 PST (-0800)

I think the gray thallus and margins really narrow it down nicely. I believe this has to be C. sideritis. (Used Bruce Ryan’s unpublished keys: works out to key 3-D-1: on rock, thallus gray, well-developed, apothecia orange. Still lots of species in that key, but the combination of pale gray thallus and same-colored rims with bright orange disks apparently rules out everything else.)

Jason, I see you’re patrolling the MO again – you beat me to my own observation :-)))
By: Andrew Khitsun (Andrew)
2014-12-07 17:02:14 PST (-0800)

Yes, these are on granitic boulders (seen on bottom photo) and from afar blend in with grey Phaeophyscia rosettes. Being in public place and on granite, I was only able to scrape off some apothecia: don’t know if it’s going to be enough for an ID.

on rock?
By: Jason Hollinger (jason)
2014-12-07 16:56:19 PST (-0800)

Created: 2014-12-07 16:47:29 PST (-0800)
Last modified: 2014-12-07 17:31:45 PST (-0800)
Viewed: 33 times, last viewed: 2016-10-28 05:45:28 PDT (-0700)
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