Observation 219335: Rhizopogon Fr. & Nordholm

Proposed Names

58% (1)
Eye3 Eyes3
Recognized by sight
28% (1)
Used references: On-line references from Japan, and from Dr. Joseph Stephano. Currently known only from Japan and from association with Pseudotsuga species not native to U.S. If this is the same, it is an extreme extension of known range. Still, the sub-peridium reddening is a feature native Rhizopogons lack.

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Eye3 = Observer’s choice
Eyes3 = Current consensus


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Might be
By: Daniel B. Wheeler (Tuberale)
2015-10-18 20:29:12 CDT (-0400)

Rhizopogon togasawariana. Just one little problem: not known from the U.S.

Identified from Japan associated with Pseudotsuga sp., not found in the U.S. But has subdural reddening of the peridium, and similar coloration, otherwise. Would be nice to see spores, Walt, to prove I’m not off my rocker here…

On roadside
By: walt sturgeon (Mycowalt)
2015-10-16 22:26:20 CDT (-0400)

under red pine in a plantation.. No latex. Some red bruising. Context becoming grayish. Not sure of the size of the locules. They are barely visible under 10X magnification. Largely epigeous.

Are these loculate, Walt?
By: Daniel B. Wheeler (Tuberale)
2015-10-16 02:11:00 CDT (-0400)

If so, what are the size of the locules? What was the likely host tree? Can tell 2-needle pine present in photo, but what that the host, or some other Pinus species? What would you describe the peridium color as being? There appears to be reddish sub-peridial bruising present. Can you confirm? Was there any latex present when the specimens were freshly cut?

Rhizopogons have rhizimes appressed to the peridium, and are typicall hypogeous. I don’t see any rhizimes here, and the specimens appear to be largely epigeous. Was that the case?

Created: 2015-10-15 19:55:29 CDT (-0400)
Last modified: 2015-10-18 20:32:55 CDT (-0400)
Viewed: 27 times, last viewed: 2016-10-23 04:51:00 CDT (-0400)
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