Observation 136847: Rhizopogon nigrescens Coker & Couch

When: 2013-06-18

Collection location: York Co., Maine, USA [Click for map]

Who: Erlon (Herbert Baker)

Specimen available

Species Lists


Copyright © 2013 Erlon Bailey
Copyright © 2013 Erlon Bailey
Copyright © 2013 Erlon Bailey
Copyright © 2013 Erlon Bailey
Copyright © 2013 Erlon Bailey
Copyright © 2013 Erlon Bailey

Proposed Names

29% (1)
Recognized by sight
48% (2)
Eye3 Eyes3
Used references: Field Guide to North American Truffles, Trappe, Evans and Trappe, p. 75
-3% (2)
Used references: Field Guide to North American Truffles, by Trappe, Evans and Trappe. p. 90. Described as “the most widely distributed and common of all Rhizopogon species”, this must be considered as well with the information we have. Distictive as having a basal cluster of rhizomorphs, forming something of a rudimentary base or stipe.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
no basal cluster
By: Erlon (Herbert Baker)
2013-06-19 12:45:52 PDT (-0700)

No basal cluster of rhizomorphs and the lack of a rudimentary stipe points away from R. vulgaris.

Under Pinus strobus
By: Erlon (Herbert Baker)
2013-06-19 00:03:56 PDT (-0700)

R. nigrescens looks very close. White peridium; quickly staining orange-red, becoming very dark/blackish as it dries. Gleba white when young and olive-clay at maturity. Strong mushroomy odor when I first brought them home that has now disappeared. Found just under the surface. Thanks!


Host tree?
By: Daniel B. Wheeler (Tuberale)
2013-06-18 22:49:00 PDT (-0700)

Need to know nearby trees for better guess, Herbert. Not many Rhizopogons reported from Maine. R. nigrescens reported from New Jersey and south, but not from your area.

Created: 2013-06-18 18:54:29 PDT (-0700)
Last modified: 2013-06-19 22:40:57 PDT (-0700)
Viewed: 107 times, last viewed: 2017-12-27 11:03:58 PST (-0800)
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