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If you’ve got some good specimens (and I somehow suspect you do!), please consider sending them to Kerry Knudsen. I’ll bet he doesn’t see material from the Great Lakes very often. McCune gave a friend this advice once: “if you can get Kerry to check your Acarospora, it’s likely you’ll find others”. I always liked that — almost like he’s saying, “no matter how many species you think you have, Kerry will find some more in the same set of specimens!” :)
I considered that Thomson only listed 6 species of Acarospora, of which one was declassified and another renamed into Pleopsidium, plus 2 species added by Bennett, to the total of 6 again. Of those A.veronensis looked like the right candidate. But I guess those discovered species are probably just a tip of the iceberg when it comes to this group – waiting for me to discover the other 60 :-)
…but bear in mind that Acarospora is especially difficult to id by photo. Can’t even begin to tell how many times I’ve guessed wrong. Come to think of it, even with microscope and chemistry I still regularly get them wrong! Depressing really.
The dark one looks different to me, too. Such a difficult genus, though.
Created: 2014-12-04 21:10:36 CST (-0500)
Last modified: 2014-12-04 21:46:17 CST (-0500)
Viewed: 52 times, last viewed: 2016-10-26 20:25:33 CDT (-0400)