Observation 87445: Cortinarius pseudorubricosus group

When: 2011-09-24

Collection location: Yosemite National Park, California, USA [Click for map]

Who: Dimitar Bojantchev (dimitar)

Specimen available

This collection blew me away… I had previously collected Cortinarius pseudorubricosus in Sweden, a very poorly documented species overall – the only illustration available, the one in the Atlas Des Cortinaires would never lead to a morphological determination!!! Anyway, this is an exotic cort that we matched against data from the Finnish crew, Niskanen, Limatainen, et al. who had in turn sequenced the type collection from France. Here is more C. pseudorubricosus

When I saw this guy in the Tioga Meadows (9500ft) I didn’t think much of it, although that the thought of pseudorubricosus did cross my mind, but I purged it pretty quickly as an unlikely one. Did not do microscopy as I ran out of time, but the molecular data is down to a couple of base pairs from the C. pseudorubricosus.

This collection demonstrates the amazing diversity of Cortinarius species and the fact that along the boreal habitat and montane ridges they spread pretty quickly. Like first colonizers after an ice age, it seems to me – those that have been closest to the glaciers, where the in Northern Europe or western North America are very, very close.

We need to collect in Yosemite very meticulously.

Collection: DBB45450

Proposed Names

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procax? cool.
By: Dimitar Bojantchev (dimitar)
2013-02-24 09:00:22 PST (-0800)

Hi Karl, thank you for the info. I looked at C. procax and I believe you are right, but I it would take a hard core proof via sequencing. Melot should have all his material processed. We need stability on the European cort scene.

Probably a late synonym
By: Karl Soop (karlsoop)
2013-02-19 09:10:43 PST (-0800)

Hi Dimitar,
C. pseudorubricosus is a name that has been adopted by Funga Nordica, but I am rather convinced that it is a late synonym of C. procax Melot, prioritary. The description and in particular the small spores, fit very well. I believe that many of Melot’s holotypes have never been sequenced, so we do not have access to that additional information yet. — I know C. procax from Rättviksheden in Sweden, where it was found by our late friend S. Gutén and confirmed by Melot.

Created: 2012-02-06 14:09:41 PST (-0800)
Last modified: 2013-12-03 10:25:26 PST (-0800)
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