Agaricus campestris var campestris L., (field mushroom)


17 Oct 2005 at OSGR: SU56 in Berks, England

Record Summary4 fruitbodies (2 buttons) in grass near small Hawthorn bush
Found asFruitbody
Date17 October 2005
Associated organismCrataegus monogyna
OS grid refOSGR: SU56
Lat/Lon51° 20’ N, 1° 20’ W
Vice CountyBerks, VC no: 22
CountryEngland
Voucher17 Oct 2005[J]
(Please quote this in any queries about this record)

Notes:

Gills: BFF: "vinaceous brown", becoming BFF: "umber" as spores ripen.

Stem base: flesh turning yellow-tinged after cutting, but soon fading.

Smell: ink.

Spore print: BFF:cigar brown.

10% KOH: weakly yellow in stem base context, unchanging elsewhere (stem and cap, context and surface)

Basidia: 4-spored.

Gill edge: fertile, with a few clavate cells up to 13µm wide (basidiomes?), but no chains.

Spores: 6-8/5-6µm.

The fertile gill edge and fairly large spores indicate A. campestris. The specimens were a bit old so the reddening colour change had been lost, although the slight yellowing at the base of the stipe survived.

Quite a few cut-off and discarded stipe bases nearby showing the area had been worked by collectors.

[ 'BFF' = British Fungus Flora colour chart ]

The following literature was used to identify this find:

standard photographs and close-ups
standard photographs and close-ups:
macro-photographs
macro-photographs:
photomicrographs
photomicrographs:

Click on a thumbnail to see the preview, then click on that for the full-sized image

Creative Commons License
This website is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International Licence.

Unless otherwise expressly stated, all original material on the BioImages website by Malcolm Storey is licensed under the above Creative Commons Licence.

Photographs from other photographers are used with permission but not included under the above CC licence.

BioImages - Virtual Field-Guide (UK)