Observation 117490: Elaphomyces muricatus Fr.
When: 2012-11-11
38.0° 120.5641° 1072m
Herbarium specimen reported
0 Sequences

Site 2

This group of truffles was found in a mixed conifer forest at the base of a small douglas fir. It includes one immature Truncocolumella citrina. The group photo in the field was not how they were found.

The trees within a 60 ft. radius included cedar, douglas fir, and ponderosa pine.

The first habitat photo faces north, then east, south, and west.

Proposed Names

55% (1)
Recognized by sight: By Dr. Mike Castellano
54% (1)
Recognized by sight

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Thank you Caz.
By: Mike McCurdy (lesmcurdy)
2012-11-22 00:23:03 EST (-0500)

The background is very much appreciated. This stuff is fascinating, and not readily available. Thanks for taking the time to look at the material, and comment.


Elaphomyces sp. nov.
By: Michael Castellano (trufflercaz)
2012-11-21 11:26:01 EST (-0500)

This is one of the numerous undescribed Elaphomyces species from North America and seems restricterd to the west coast of North America. Very few collections of this sp. nov. are extant.

Elaphomyces muricatus Fries is a European name that has been confused since nearly its inception in 1820. Vittadini in Italy in 1831 added a couple of new species that have similar gross characteristics to E. muricatus. That is large brown peridial warts and a vareigated inner peridium. Vittadini unfortunately never examined any of Fries material and relied on his rather cryptic Latin descriptions. This has lead to some confusion in Europe of the true identities of E. muricatus, E. decipiens, E. hirtus, E. vareigatus, and E. reticulatus. I have studied all the european type material of these species and sorted them out. I have a draft of a revision of all 23 European Elaphomyces species in hand that I am finishing up. E. muricatus does not occur in North America, we have 6 other similar looking species that can be discriminated by morpohology that occur in eastern NA. I am still working out the western ones and I have not studied the western ones in depth enough to tell if the east and west of NA have species overlap. I have 32 different (29 new) Elaphomyces species that occur in eastern NA. Most of these have a black outer peridium but at least 6 are similar in peridial characters to E. muricatus sensu stricto.

More info than you probably wanted or needed but just to spur you along in your collecting of a very interesting habitat.

thanks for sending your specimens to me in a fresh enough condition that I can get great pictures for a future book on truffles.


Created: 2012-11-21 01:24:38 EST (-0500)
Last modified: 2012-11-21 03:20:00 EST (-0500)
Viewed: 61 times, last viewed: 2017-07-28 18:18:01 EDT (-0400)
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