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Fungus Conservation Trust Formerly The Association of British Fungus Groups • View topic - Marasmius?

Marasmius?

species identification

Marasmius?

Postby Richard Scott » Sat Sep 26, 2015 3:41 pm

Found under conifers on sandy acid soil growing on the wood of what I think is a piece of pine.
Cap 20mm bluey grey with slight marginal fringe.
Stem approx. 80mm, darker grey than cap, very strong.
Gills lighter bluey grey than cap. Spore print hyaline. Spores approx 12 x 6.8 micron.
Basidia 4 spored.
IMG_8059 - Copy.JPG

IMG_8060 - Copy.JPG

IMG_8061 - Copy.JPG

2015-09-25_0001_100X - Copy.jpg

2015-09-25_0003_100X - Copy.jpg

2015-09-25_0004_100X - Copy.jpg


What are these?
2015-09-25_0012_100X - Copy.jpg
Richard Scott
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Re: Marasmius?

Postby Mal Greaves » Sat Sep 26, 2015 11:39 pm

Mycena filopes. You have quite a good photo of the tops of the cheilocystidia a vital ingredient in identifying Mycena;) With a slightly harder squash you get something like this (I can't believe this naff photo is the best I have sorry)
cheilocystidia3.jpg


Mal
Malcolm Greaves
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Re: Marasmius?

Postby Richard Scott » Sun Sep 27, 2015 11:25 am

In fungi of Switzerland it says M. filopes has basidia with 2 sterigmata, Phillips says 4, Jordan says 2 & 4, my photos clearly show 4????
Many thanks Mal.
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Re: Marasmius?

Postby Roy Betts » Sun Sep 27, 2015 5:39 pm

It is most likely M. filopes as Mal says but you really need to measure the cystidia to differentiate from M. metata:
Filopes = up to 18 x 30µ
Metata = up to 27 x 76µ
Both species can be pale grey-brown (although metata often vinaceous-pink tones). Both species can also have 2- or 4-spored basidia (according to Maas Geesteranus), so both B&K (FoS) and Phillips are only partially right.
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Re: Marasmius?

Postby Richard Scott » Tue Oct 13, 2015 11:49 am

Thanks Roy.
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