Observation 118242: Hebeloma (Fr.) P. Kumm.

When: 2012-11-27

Collection location: Turlock, California, USA [Click for map]

Who: Randy Longnecker (Randy L.)

No specimen available

Species Lists



Proposed Names

61% (2)
Eye3 Eyes3
Recognized by sight
27% (1)
Recognized by sight

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
So far
By: Irene Andersson (irenea)
2012-12-01 04:12:26 CST (-0500)

I have found this paper

It shows that at least hiemale is widespread – with the species concept they are using (similar macro- and micro characters and not too distant DNA).
When I read the comments, I have come to the conclusion that they are using a rather wide concept with some accepted differences, both in spore structure and size, and that it may include several other described species.
The differences in DNA don’t seem to correspond with geographical distribution, host trees or morphological characters, so their conclusion is that they can also vary within one and the same species.

I haven’t found any other studies that includes american material.

By: Byrain
2012-11-30 15:56:26 CST (-0500)

I did some limited reading up on north american Hebeloma recently, they seem not very well resolved. I considered H. hiemale for my collection, but I don’t feel confident using any names without more literature at least. I was hoping someone here could help once I get around to uploading them. :)
I also have something in the H. sinapizans group found on the other side of the lawn (Different colors, size, and stem texture) with non-dextrinoid spores…

Do you know if NA and Europe actually share any Hebeloma species with DNA confirmation?

(And I see the water drops on the gills now that they were pointed out, both of the species I found also had them.)

Tiny drops
By: Irene Andersson (irenea)
2012-11-30 10:35:52 CST (-0500)

are seen quite well in the third photo, but they don’t necessarily make it crustuliniforme.

No water drops on gills
By: Randy Longnecker (Randy L.)
2012-11-30 10:29:12 CST (-0500)

Not that I noticed anyways…

Glad to see
By: Irene Andersson (irenea)
2012-11-30 03:32:19 CST (-0500)

someone at last questioning a crustuliniforme ID..
Hebeloma is a large and difficult genus, and there are others with droplets in Europe too.

Here’s a name of another european species, easily mixed up with crustuliniforme without microscopy…

Hebeloma crustuliniforme
By: Byrain
2012-11-30 02:03:42 CST (-0500)

is an European name, there are other species here, how many idk. I scoped one I found recently that looks somewhat like this which had weakly dextrinoid spores. The European H. crustuliniforme has non-dextrinoid spores. Did you observe water droplets on the gills? Especially on the young material.

Created: 2012-11-28 19:17:27 CST (-0500)
Last modified: 2012-11-30 15:57:45 CST (-0500)
Viewed: 96 times, last viewed: 2017-06-14 12:36:28 CDT (-0400)
Show Log