When: 1996-03-15

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

Who: Nathan Wilson (nathan)

No specimen available

The date is only accurate to the month.

I originally thought this was an Inocybe primarily due to the odor and some limited experience with Inocybe in southern California. Hebeloma did not occur to me as a possibility at the time. However, now that it has been proposed and with verification that some have sweet, even matsutake-like odors, I consider it to be Hebeloma. Hopefully, I’ll find it again and we can look at some actual material in depth.


Loaded from Inocybe/fradans/1996-03-slide-1.jpg.
The date is only accurate to the month.

Proposed Names

9% (4)
Recognized by sight
74% (6)
Recognized by sight
61% (2)
Recognized by sight: Due to the sweet, matsutake-like odor.
Used references: Based on Arora.

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

= Observer’s choice
= Current consensus


Add Comment
Some have sweet fruit odor…
By: Douglas Smith (douglas)
2009-01-19 12:55:16 CST (-0600)

Not sure I can add much here, but I’ve tried looking at a few Hebelomas by now, and haven’t really gotten anywhere. I’ve found very roughly that about half to 2/3 found have a raphanoid odor, that most of the rest don’t have any odor, and that about 5-10% have a sweet fruity odor, perhaps a little like rotten fruit. This is all pretty rough, and I tried to id what I found from a few sources, and didn’t really get anywhere. I’m assuming at this point that most of the Hebelomas of California are just unknown, and not understood yet, and there are quite a few of them. I’ve kinda given up looking at Hebeloma out here really, and they are really waiting for someone to take up the cause, there are probably a lot of unknown species to describe out here if anyone wants to give it a try, it only take 5-10 years of work I’m sure…

I’ve been swayed
By: Nathan Wilson (nathan)
2009-01-19 11:38:38 CST (-0600)

Given the information that’s available, I now think it is more likely that this is a Hebeloma than an Inocybe.

By: Irene Andersson (irenea)
2009-01-15 04:41:15 CST (-0600)

Some Hebelomas have a strong sweetish odor that could remind of Inocybe pyriodora. The closest I can find in my books with that kind of smell is Hebeloma gigaspermum (spores strongly dextrinoid, verrucose, (11,5-18 × 6,5-9,5), but it looks too sturdy. Maybe Hebelomas also tend to be larger in southern California? But I’m sure you have a bunch of others too.

I can’t see those two observations as being anywhere close to each other..
By: Dimitar Bojantchev (dimitar)
2009-01-14 16:16:44 CST (-0600)

Observation 279 looks far more like an Inocybe, in fact, looking at the stipe color it reminds me of I. fraudans. But this collection here, with the snow white stipe and its texture is very much Hebeloma. As far as the odor, other than the raphanoid, which is the classic for the Genus, recently I collected some that had other odor component, not quite like Matsutake, but diverse nevertheless. I. fraudans also has an aromatic odor, I’ve no idea why they say matsie… Anyway, here is the link to I. fraudans that I just put together.


Nathan, the site need an Advanced Search feature, please drop everything else and build it!! You can’t sift through 40,000 pictures easily and find what’s needed. Since you have a database underneath, I’d assume it’s just a matter of putting some SQL together via JDBC, or whatever else you use.. 

Have fun,

Agree on the stature, but…
By: Nathan Wilson (nathan)
2009-01-13 22:51:09 CST (-0600)

are there Hebelomas that have that matsutake odor? These particular ones were quite immature and I’m pretty confident observation 279 is the same thing only older. I’ll make a collection the next time I see it.

Most definitely Hebeloma
By: Dimitar Bojantchev (dimitar)
2009-01-13 02:03:36 CST (-0600)

Decisively not I. fraudans. Just did some work on these. Nathan, this 99.9% Hebeloma — the ornamentation of the upper stipe, as well as the overall stature are most telling.

Definitely Inocybe
By: Nathan Wilson (nathan)
2008-04-11 00:19:09 CDT (-0500)

They had the characteristic sweet Matsutake like odor. Interestingly Inocybes have a tendency to be a bit larger in southern California than in northern California.

By: Erin Page Blanchard (CureCat)
2008-04-10 16:36:25 CDT (-0500)

What about Hebeloma??