When: 2015-06-16

Collection location: 85 Barney St., Larksville, Pennsylvania, USA [Click for map]

Who: Phil Yeager (gunchky)

No specimen available

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Proposed Names

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= Observer’s choice
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Comments

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Thanks again Bryrain
By: Phil Yeager (gunchky)
2016-04-03 10:42:39 PDT (-0700)
These fungi appear in my yard on a regular basis about the same time each year. Your information should help me to differentiate between the species.
You can tell Agrocybe from Panaeolus
By: Byrain
2016-04-02 17:23:21 PDT (-0700)

By the lack of mottled (Spotted) gills in Agrocybe, look at the Panaeolus, Panaeolina and Copelandia collections on MO to see what I mean.

Additionally Agrocybe will have lighter colored mature gills and spores.

Almost forgot
By: Phil Yeager (gunchky)
2016-04-02 17:20:50 PDT (-0700)

Thanks Byrain.

Yes
By: Phil Yeager (gunchky)
2016-04-02 17:19:35 PDT (-0700)

I find both species along with some others in my back yard at this time of the year. I thought the gill color looked strange for P. foenisecii, but I leapt before I looked.

I wasn’t sure whether…
By: Dave W (Dave W)
2016-04-02 16:24:13 PDT (-0700)

the Agrocybe pediades issue had been completely settled. Awhile back there was another species name being applied, but I think it may have been lumped in with pediades.

Byrain, I was writing my ID proposal while yours got posted, and didn’t see your post until mine appeared. Not meant to suggest that your pediades species proposal should be challenged. I took my proposal down to eliminate the possibility of this interpretation. Actually, it’s nice to know that I may use the species name pediades without inviting controversy.

Phil, in late spring A. pediades and P. foenisecii often grow together on lawns in our area. Aside from some color differences (typically), P. foenisecii is a fragile mushroom with a very dark (almost black) purplish-brown spore print. A. pediades has a more fibrous stipe, and spore print a more generic shade of brown.

As far as I know…
By: Byrain
2016-04-02 15:58:51 PDT (-0700)

There is no evidence of other taxa in the Agrocybe pediades group than A. ochracea, the habitat strongly favors A. pediades.

There are also other described taxa that could look macroscopically similar, but they are rather different microscopically and should not be considered in the same group. These are rarely identified though, whether that is because they are rare or because no one tries to figure them out properly I’m not sure.