Observation 20846: Hebeloma crustuliniforme (Bull.) Quél.

Today I noticed a nice group of exotic fungi growing under some near by Silver Birch trees these were Amanita muscaria, Paxillus involutus, Leccinum scabrum. To my surprise there was one I did not recognise nor have seen under these trees before. Its likely this is another exotic. Spores brown 12 × 6.5µm amygdaliform with acute apex, cystidia present often in groups, sphaeropedunculate shaped.

[admin – Sat Aug 14 02:04:57 +0000 2010]: Changed location name from ‘Private property, Aranui Rd, Mt Wellington, Auckland, New Zealand’ to ‘Private property, Aranui Rd., Mount Wellington, Auckland, New Zealand’


Been to late in the day for my camera this image was created with my flat bed scanner

Proposed Names

77% (2)
Recognized by sight: Certainly a Hebeloma, but that is as far as I can get
Based on microscopic features
82% (1)
Eye3 Eyes3
Used references: Unpublished keys
Based on microscopic features
Based on chemical features

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Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
Spotted gills
By: Clive Shirley (myxo)
2009-05-07 23:53:17 PDT (-0700)

Yes there were brown spots on the gills seem to becoming from brown pigment in the basida. It also had a different smell although I am not sure if it was the radish smell it should have been but then I have never smelled a radish before.
Thanks for your help.

Spotted gills?
By: Irene Andersson (irenea)
2009-05-07 07:49:03 PDT (-0700)

To be crustuliniforme, that’s essential, and that’s where you can sort out most of the other Hebeloma species.

The use of Melzer’s to make the right turn in a Hebeloma key feels like a lottery (almost indextrinoid, weakly, distinctly or strongly dextrinoid..)

Hebeloma sp.
By: Clive Shirley (myxo)
2009-05-07 00:40:14 PDT (-0700)

Thanks Irene,
looking into the species reported as been here, it looks to be Hebeloma crustuliniforme. I just discovered I have unpublished trial keys for this group and these also key out to the same species. Although that might be just dumb luck as the keys I have require the use of melzer’s and mine is so old and of doubtful quality.

I am not very familiar with this genus we have very few native species so are now getting a better feel for this group.

Created: 2009-05-06 00:58:11 PDT (-0700)
Last modified: 2011-04-01 11:18:51 PDT (-0700)
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