Observation 34919: Cortinarius (Pers.) Gray
When: 2009-06-25
Herbarium specimen reported

Notes: This was found in a mixed forest of Mountain Hemlock, white and red Fir, and western white pine.

Here is what Dimitar said in an email

This one is in the group of C. flavobasalis or C. flavoroseus, but since NOBODY RELEASED ANY NOTES to me about what they mean, we have to treat them as new. Note the rather prominent annular zone. It varies with collections on where it appears. These can be medium sized species ~2-3 inches, or very small, ~1-1.5 inches — I am curious as hell to see if these are environment conditions, or different species..

Some of my photos here
check the ones on the 3-rd row all these were from that area

Now check this one — very similar, but the annulus much lower, almost like a volva

Same? Not? Spore analysis and other microscopy is inconclusive…

[admin – Sat Aug 14 02:19:06 +0000 2010]: Changed location name from ‘Yosemite National Park, at junction of Highway 20 and May Lake Rd.’ to ‘Highway 20 and May Lake Rd., Yosemite National Park, California, USA

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Additional comments
By: Dimitar Bojantchev (dimitar)
2010-03-19 17:09:08 PDT (-0700)

Just to add to what I said to Prof. Tom Bruns earlier. We in California have several very common snowbank Corts that appear within 1-3 weeks after the snow melt at a particular location and very often right on the edge of large snow masses. Still they fruit typically when the overall temperatures come up a bit — i.e. May-June — at elevations ranging from 3,000 to 7,000 ft. They are the first echelon of the Spring Corts. There are two provisional names that have been floated around and occasionally applied to them — C. flavobasalis and C. flavoroseus. Cathy Cripps has been writing about them too for awhile — not sure how much of that applies to California. Anyway, they are supposed to differ in their UV colors although that we have at least one common species that doesn’t even exist in the provisional space.

http://www.fungimag.com/spring-09-articles/13_Snow.pdf

BUT, since I have not seen any original descriptions for flavobasalis or flavoroseus, nor any verifiable photography, I can only treat them as a mystery that people like to talk about. I asked Joe Ammirati and Michelle Seidl at one point to share some of their info as they studied the snowbank Corts of the PNW, so that we can compare to our California material, but didn’t get back anything. So, we should treat them as Cortinarius sp. in California and try to make sense of them. Notably, there are no records on GenBank for C. flavobasalis, C. flavoroseus, or even for the best understood of them all — C. subalpinus Moser nom. prov. So, there is nothing really to compare against even after we process and create quality observations for our material (and sequence the hell out of it, of course).

D. www.mushroomhobby.com

Created: 2010-03-19 14:44:03 PDT (-0700)
Last modified: 2013-11-30 20:52:50 PST (-0800)
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