Observation 113008: Chroogomphus (Singer) O.K. Mill.

Found in a small group in sandy soil under pine. Chroogomphus species is confirmed by purple coloration seen in Melzer’s (see brightfield image). Cystidia are large (longer than 100 microns) and thick walled. Cystidia are thickest approximately 2/3 down and walls are 7-8 microns thick (see DIC image). Spores are “bolete-like” and large and very elongated. 20 spore average is 21.7 × 5.9, Qm = 3.71.

Proposed Names

37% (3)
Recognized by sight
Based on microscopic features
52% (3)
Based on chemical features: 100% Match to the ITS region to Orson K Millers sequence (Genbank AF205658) for Chroogomphus jamaicensis.
72% (3)
Eye3 Eyes3
Recognized by sight: Clearly a Chroogomphus, but there is now debate about the species.

Please login to propose your own names and vote on existing names.

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
I found the same species in the NJ Pine Barrens …
By: Linas Kudzma (baravykas)
2014-11-15 17:42:07 CET (+0100)

See http://mushroomobserver.org/188525

ITS sequence is identical to this collection.

By: Linas Kudzma (baravykas)
2014-03-03 14:01:01 CET (+0100)

as far as I can tell. Crush mount.

By: Image Sharer (image sharer)
2014-03-02 00:26:23 CET (+0100)

Are the cystidia cells cheilocystidia or pleurocystidia?

Added Chroogomphus so the images continue to get exported…
By: Nathan Wilson (nathan)
2013-12-22 04:34:58 CET (+0100)

Due the debate about the species epithet, I’ve added an id at the genus level so the great images continue to get exported to other websites (like EOL).

I will …
By: Linas Kudzma (baravykas)
2013-12-21 17:36:26 CET (+0100)

note the trees carefully next year. I visit this spot every year on the way home from Maine.

By: Noah Siegel (Noah)
2013-12-21 17:23:29 CET (+0100)

also appears to be Red Pine needles in the picture (a long two needle pine)

Eastern White Pine …
By: Linas Kudzma (baravykas)
2013-12-21 10:38:49 CET (+0100)

was the predominant tree in that area.

Any idea what speices of pine?
By: Nathan Wilson (nathan)
2013-12-21 05:17:49 CET (+0100)

I’m guessing either Eastern White Pine (P. strobus) or Pitch Pine (P. rigida).

But is C. jamaicensis a valid species?
By: Nathan Wilson (nathan)
2013-12-21 05:14:41 CET (+0100)

Miller didn’t think so in his 2003 paper (which was after this sequence was taken). In some ways this could lend support for that opinion since the type of C. vinicolor was from upstate New York. More sampling is definitely called for.

100% Match to Orson K Millers sequence
By: Linas Kudzma (baravykas)
2013-12-20 04:42:51 CET (+0100)

for the ITS region (Genbank AF205658) for Chroogomphus jamaicensis.

Thanks Nathan!
By: Linas Kudzma (baravykas)
2013-12-09 14:45:16 CET (+0100)

I just noticed your comment and read about your project.


Awesome microscopy!
By: Nathan Wilson (nathan)
2013-11-19 03:28:19 CET (+0100)

Clearly shows the nice thick cell walls.

Created: 2012-10-10 03:13:35 CEST (+0200)
Last modified: 2014-11-15 17:43:23 CET (+0100)
Viewed: 170 times, last viewed: 2018-01-01 22:41:45 CET (+0100)
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