Observation 194189: Endocarpon diffractellum (Nyl.) Gueidan & Cl. Roux
When: 2014-05-03
No herbarium specimen

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Eye3 = Observer’s choice
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By: Andrew Khitsun (Andrew)
2014-12-21 16:52:30 PST (-0800)

In WI records, some are from almost the exact spot where this one was found, and according to Thomson the species is found “in the canyons in the southwestern Driftless Area” (just like the canyon hosting this specimen). The only problem seems to be the substrate: acidic quartzite sine the species seems to like calcareous rocks. Brodo, however, says “typically on lime-containing rocks, but sometimes on gneiss or even granite”.

Okay, would you believe…
By: Jason Hollinger (jason)
2014-12-21 13:04:50 PST (-0800)

Staurothele diffractella instead? Never heard of it, but it looks right: CNALH.

S.clopimoides is not listed in WI :-(((
By: Andrew Khitsun (Andrew)
2014-12-21 12:44:54 PST (-0800)

CNALH map shows it in the Rockies westward. But I like the idea of Staurothele – probably because it’s new to me genus. At any rate, I keep revising these places and hopefully one day will find a specimen I can take and solve the mystery.

I think those are perithecia
By: Jason Hollinger (jason)
2014-12-21 12:31:15 PST (-0800)

I realize there will be no way to verify this id, but I think this looks a lot like Staurothele clopimoides. There are probably some species of Verrucaria which resemble this, too.

No samples were taken off of this quartzite block
By: Andrew Khitsun (Andrew)
2014-12-21 11:18:45 PST (-0800)

So the ID will be only tentative…

Created: 2014-12-21 10:51:37 PST (-0800)
Last modified: 2014-12-21 13:20:07 PST (-0800)
Viewed: 23 times, last viewed: 2016-10-23 14:51:06 PDT (-0700)
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