Observation 133376: Agrocybe sororia (Peck) Singer

When: 2013-05-10

Collection location: Erie, Pennsylvania, USA [Click for map]

Who: AJ (j7u)

No specimen available

Proposed Names

45% (2)
Recognized by sight
23% (3)
Recognized by sight: Robust fruit bodies, in wood chips, no annulus
52% (3)
Eye3 Eyes3
Recognized by sight: Robust fruit bodies, in wood chips, no annulus
Eastern NA.

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

Eye3 = Observer’s choice
Eyes3 = Current consensus


Add Comment
By: Richard Kneal (bloodworm)
2013-05-13 09:57:28 PDT (-0700)

if the cystidia of these specimens differs from A. putaminum and the spores match “Naucoria sororia,” then we can almost say for certain that these are indeed Agrocybe sororia…
you may be the first one to document it.

:popcorn: :-)

By: Byrain
2013-05-13 09:50:54 PDT (-0700)

Yea, that is more helpful, but I really think cystidia is essential for Agrocybe descriptions…

Also, P.R. Johnston’s photos look like classic A. putaminum, especially the third one. See observation 116752, that stipe texture may be unique to A. putaminum.

By: Richard Kneal (bloodworm)
2013-05-13 09:28:24 PDT (-0700)

it seems that this was originally described as Naucoria sororia by Peck in 1907…

still not too revealing but i did find this…

Naucoria sororia Peck, Bull. Torrey Club 34: 101. 1907.
Pileus fleshy, fragile, convex, broadly umbonate, solitary or gregarious, 5-10 cm. broad; surface glabrous, lacunose, subviscid, tawny, often with a slightly darker zone near the margin when moist, margin even, wavy or slightly lobed; context firm, watery, white, the taste and odor farinaceous; lamellae narrow, crowded, adnate, whitish, becoming darker with age and on drying; spores ellipsoid, 10-12 X 6-8 I; stipe equal or slightly bulbous, flexuous, fragile, stuffed, pale-tawny, white within, striate at the apex, 4-12 cm. long, 4-8 mm. thick.



By: Byrain
2013-05-13 08:45:45 PDT (-0700)

I sent you a reply. :)

By: AJ (j7u)
2013-05-13 06:11:51 PDT (-0700)

You still want to scope these? I tried shooting you an email through your profile page.

By: Richard Kneal (bloodworm)
2013-05-12 22:35:51 PDT (-0700)

i think Murrill was in the mix here somewhere with this species.
when i get home from work i’ll look for more info on it.

By: Byrain
2013-05-12 22:32:27 PDT (-0700)

Though that is kind of bare-bones and not very useful as a description…

Also, I wonder why P.R. Johnston’s photo is not A. putaminum? I really wish more mycologists did as good a job with Agrocybe as Nauta did.

By: Richard Kneal (bloodworm)
2013-05-12 22:20:14 PDT (-0700)

Caps: Up to 10 centimeters wide; convex to broadly convex; brown with a dark brown zone around the margin
Gills: Attached; adnate to slightly decurrent; pale cream turning brown with age.
Stems: Up to 1 centimeter thick; dark tan, pale cream at the apex; faintly radially grooved at the apex.
Spore print: Brown.
Habitat: Hardwood chips and mulch.
Season: Spring.
Edibility: Unknown.

from pamushrooms.org
they also show a photo, but a better photo by mycologist P.R. Johnston
can be found here…


By: Byrain
2013-05-12 21:04:06 PDT (-0700)

Do you know of any confirmed A. sororia images or where I can find a description?

A. putaminum…
By: Richard Kneal (bloodworm)
2013-05-12 18:43:17 PDT (-0700)

is a western species as far as i know.

re: drying
By: Byrain
2013-05-10 19:31:22 PDT (-0700)

Yea, I’m not sure what effect heat will have on the cells, a fan would be a safer bet for identification purposes. Might have to leave it on for a little bit till they’re cracker dry.

By: AJ (j7u)
2013-05-10 19:21:50 PDT (-0700)

I have a convection oven that goes down to 135 degrees F. I was planning leaving the door cracked and drying them on that setting, but if you think the fan is a better plan though I’ll do that.

By: Byrain
2013-05-10 19:04:35 PDT (-0700)

You could dry them by sticking them on some paper towels in front of a fan.

By: AJ (j7u)
2013-05-10 18:07:25 PDT (-0700)

Yes, but I don’t have a dehydrator. I could dry them in the oven if you want to scope them. I think farinaceous is a good description for taste. A bit potatoey. What are you thinking they may be?

Is there a collection?
By: Byrain
2013-05-10 17:58:22 PDT (-0700)

I want to scope these, could prove to be something interesting. :) And would you think the taste is farinaceous at all?

Other characteristics
By: AJ (j7u)
2013-05-10 12:27:47 PDT (-0700)

Spore print is brown, taste fragrant and bitter, smell nutty

Created: 2013-05-10 12:15:29 PDT (-0700)
Last modified: 2014-05-18 18:35:54 PDT (-0700)
Viewed: 327 times, last viewed: 2018-06-05 17:16:24 PDT (-0700)
Show Log