Observation 45600: Panaeolus (Fr.) Quél.

When: 2010-05-19

Collection location: Oak Hill Animal Hospital, Oak Hill, West Virginia, USA [Click for map]

Who: Eddee (eddeeee)

Specimen available

Found growing near an animal hospital in grassy area that once had several horse apples laying there. The horse dung has long sense gone, but has left a bare spot in the grass where these fungi erupted from. There very small with a black spore print. spores are lemon shaped and some what large at about 11 microns. cap smooth slightly zoned and slightly striated 1 cm stem 4 cm bruising a reddish brown at the base slightly hairy. with a red bruising at the base.

[admin – Sat Aug 14 02:03:59 +0000 2010]: Changed location name from ‘Oak Hill Animal Hospital Oak Hill Fayette Co. West Virginia’ to ‘Oak Hill Animal Hospital, Oak Hill, West Virginia, USA’


spore shot
from above

Proposed Names

-27% (4)
Recognized by sight: found in dung rich grass
Based on microscopic features: Spores 11 microns lemon shaped smooth. spore print black
72% (3)
Recognized by sight: Panaeolus
56% (5)
Used references: Based on current conversation on MO we will go with that.When I can get to the scope and check out the cheilocystidia.

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

= Observer’s choice
= Current consensus


Add Comment
By: Alan Rockefeller (Alan Rockefeller)
2011-04-18 13:36:17 MDT (-0600)
where would I find a reference?
By: Eddee (eddeeee)
2010-05-19 19:29:24 MDT (-0600)

Where can I find a reference to P.fimicola ?

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-05-19 12:56:03 MDT (-0600)

That’s the one I was thinking of Alan.

By: Alan Rockefeller (Alan Rockefeller)
2010-05-19 12:27:18 MDT (-0600)

Another option is P. fimicola. Seems to match the description ok. Can you post some pics of the cheilocystidia?

Also spore measurements would really help.

It could also be P. olivaceus. The ornamentation on the spores in that species is so fine that it can only be seen under ideal conditions with a light microscope.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-05-19 12:24:17 MDT (-0600)

There a few other species that would fit, I just cant find my paper that has the details about them :(

I don’t know what this could be
By: Eddee (eddeeee)
2010-05-19 07:15:36 MDT (-0600)

It was growing in an area where there had been horse dung hanging out for some time and these spores of P papilionaceus are smooth ,lemon shaped. The images where taken after about an Hr. of a downpour so I was thinking maybe the vial remnants where washed of. My other thought was P.foeniscecii but there spores are roughened on that species, Another thought is P acuminatus. Kou mentions it http://www.mushroomexpert.com/panaeolus_acuminatus.html. It lacks the Vail and has smooth spores but the stems are very tall being 12 cm and the spore do not turn red in KOH as Kou mentions.

By: AmatoxinApocalypse (AmatoxinApocalypse)
2010-05-18 23:58:56 MDT (-0600)

I do not see any toothlike partial veil remnants around the margin, and the cap is not as conic as Pan pap. I have also never seen Pan pap have a cap like that, I always see them with a silvery cap/straw colored cap.