Observation 69395: Inocybe (Fr.) Fr.
When: 2011-06-16
No herbarium specimen

Notes: I had these pegged as Inocybe until I saw the spores. They even smelled like Inocybe. I suppose one macro difference is that Inocybes (like I. fastigiata) have streaked rather than grooved caps. I had thought maybe the grooves in the caps seen here were a precursor to the radially spitting typical in an Inocybe. Sometimes my old 400x scope gets the job done!

On a lawn about 15 feet away from a wood border.

Proposed Names

-49% (2)
Based on microscopic features: Star shaped spores
93% (3)
Eye3 Eyes3
Based on microscopic features: Because of the brownish spores which reminds to a morning star

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

Eye3 = Observer’s choice
Eyes3 = Current consensus

Comments

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Spore print brown.
By: Dave W (Dave W)
2011-06-18 16:06:55 AST (+0300)

As seen in the newly added photo, the spore print does not show very brightly against the black background. Although brown and pink/salmon may be confused, an entoloma print should really stand out against the black.

Also, looks to me like the stellate appearance of these spores is due to the attached nodes.

Thanks for all the input! An interesting mushroom that, to my eye, has a rather distictive appearance.

stellate spores
By: Drew Parker (mycotrope)
2011-06-18 04:20:43 AST (+0300)

We have a good many stellate spored Inocybes in North America. At some point they will be segregated into seperate genera.

Thank you for the information, Andreas.
By: Dave W (Dave W)
2011-06-18 02:14:14 AST (+0300)

“Audubon” is a classic North American mushroom field guide. I use the 1981 edition.

I just read through a 1924 publication, volume 10 of “North American Flora.” This volume contains a section on the genus Inocybe, by Calvin Henry Kauffman. The list includes many examples of Inocybe species which have angular or angular/nodulose spores. One species description refers to the spores as “stellate.”

Just looked at the spores from this collection again. The “arms” of the “stars” do appear as nodes. So now I’m beginning to believe my initial reaction… Inocybe! (Without the photo magnification available here at MO, we would not see this about the spores in my collection.)

Just arranged three fresh looking specimens for spore drop. Check tomorrow for an update.

BTW, there’s another recent MO observation that looks a lot like my collection. Last night I posted “Inocybe species” as “could be”, and that proposal was promptly “as if”ed into the ground. Link goes to this obs.
http://mushroomobserver.org/69339?q=4pzB

Spore shapes and spore prints
By: Andreas (AK_CCM)
2011-06-18 00:26:52 AST (+0300)

Sorry but I doesn’t know Audubon. In Germany there are nearly 40 Inocybe species with more or less angularly to spiny spores. The number of such species in whole Europe should be higher. Because of that I think in the USA existing also several species without smooth spores.

Do you know this knack for too thin spore prints? Take a razor blade or a object slide, heap up the spore powder and press it flat. Then you could discern the color also with lesser spore powder.

Regards, Andreas

I just now
By: Dave W (Dave W)
2011-06-17 23:33:46 AST (+0300)

scanned through Audubon and noticed there is one Inocybe listed as having angular spores (I. albodisca). I had thought that Inocybe spores were generally (mainly) smooth curved. The star shape is something that I associate with entoloma types. I had originally thought (after viewing the species dscriptions in Phillips) that this may be I. fastigiata. But spores for this species group are listed as “elliptical, smooth” in Audubon.

Spore print was not thick enough to discern color. There’s still one or two out on my lawn. I’ll see if I can get a better drop.

Inocybe
By: Andreas (AK_CCM)
2011-06-17 17:14:33 AST (+0300)

I see brownish (!) spores and their shape reminds to a morning star. Why do you think that this fungus isn’t a Inocybe sp.? Regards, Andreas

Compare
By: Dave W (Dave W)
2011-06-17 15:30:36 AST (+0300)

Created: 2011-06-17 15:27:14 AST (+0300)
Last modified: 2011-06-18 16:02:16 AST (+0300)
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