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Observation 216569: Agaricus campestris L.

Original Herbarium Label: Agaricus campestris L.
The sporocarp was young
Notes on the herbarium label:
Single fruit. body
Cap white, dentre slightly tan
smooth ø 4 cm NH4 negat.
Stipe white, not yellow bruising 7 cm x 1 cm
Veil thin, white forming ring
Gills pink
Smell mild

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Proposed Names

37% (2)
Recognized by sight

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Add Comment
Oh dear.
By: Christian (Christian Schwarz)
2015-09-20 23:23:03 MDT (-0600)
Thank you for your comment
By: Oluna & Adolf Ceska (
2015-09-20 21:54:14 MDT (-0600)

Our collections are a part of the UBC herbarium. We can speed up accessioning of this particular specimen and you can request it on a loan from the UBC herbarium. UBC contacts are in the first few lines of our profile. Thanks! O.&A. C.

This does not look like…
By: Dave W (Dave W)
2015-09-20 18:18:53 MDT (-0600)

what I would call a “field Agaricus” here in eastern NA. (I say “field Agaricus” because, as I understand the situation, “compestris” is a Euro name with dubious application in NA.) The persistent membranous ring does not fit my concept of the relevant group of species.

I understand that western NA is much different than eastern NA. But I would not expect such a notable deviation in morphology, especially with a grass-loving saprobe.