Large Mushrooms Growing in Hay Bales

Please try to include photos to show all parts of the fungus, eg top, stem, and gills.
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ukdzvz
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Large Mushrooms Growing in Hay Bales

Post by ukdzvz » Thu Aug 16, 2018 3:34 pm

Hi everyone, we are growing vegetables in hay bales and the other day these two amazing looking mushrooms appears in amongst all the undergrowth, can anyone please identify for me. Thanks so much.
hay-bale-mushrooms.jpg

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adampembs
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Re: Large Mushrooms Growing in Hay Bales

Post by adampembs » Thu Aug 16, 2018 8:37 pm

Welcome to UKFungi

Please read the FAQ on "how to help us help you identify your finds"
viewtopic.php?f=4&t=49

It is important to provide a shot of all parts of the mushroom; the gills and stem are vital to see.

regards
Adam Pollard
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Chris Yeates
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Re: Large Mushrooms Growing in Hay Bales

Post by Chris Yeates » Fri Aug 17, 2018 12:15 am

adampembs wrote:
Thu Aug 16, 2018 8:37 pm
Welcome to UKFungi
Please read the FAQ on "how to help us help you identify your finds"
viewtopic.php?f=4&t=49
It is important to provide a shot of all parts of the mushroom; the gills and stem are vital to see.
regards
Adam's comments are indeed correct. But at least we can see the gills and crucially useful information on the habitat was given. The fungus is surely Volvopluteus gloiocephalus (= Volvariella gloiocephala, = Volvaria speciosa, depending which book you are using).

Chris

For those interested in the reasons for the change of genus, see Phylogeny of the Pluteaceae (Agaricales, Basidiomycota):
taxonomy and character evolution
in Fungal Biology 115, pp. 1-20. Essentially, following sequencing, despite morphological similarities this and allied species belong in the Pluteoid clade, some distance from 'true' Volvariella species such as Volvariella caesiotincta, V. volvacea, V. surrecta et al.
"You must know it's right, the spore is on the wind tonight"
Steely Dan - "Rose Darling"

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adampembs
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Re: Large Mushrooms Growing in Hay Bales

Post by adampembs » Fri Aug 17, 2018 9:42 am

The most diagnostic feature of these are the volva (a sheath around the base of the stem) as per this photo. You might need a knife or small tool to excavate some soil away.

http://www.francini-mycologie.fr/MYCOLO ... ephala.jpg
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