Small Brown Fungus
Forum rules
Please do not ask for the identification of fungi for edibility or narcotic purposes. Any help provided by forum members is on the understanding that fungi are not to be consumed. Any deaths or serious poisonings are the responsibility of the person eating or preparing the fungus for others. If it is apparent from a post that the fungus is for eating or smoking etc, the post will be deleted and a warning given. Although many members do eat fungi, no-one would be willing to take someone else's life into their hands.
Please do not ask for the identification of fungi for edibility or narcotic purposes. Any help provided by forum members is on the understanding that fungi are not to be consumed. Any deaths or serious poisonings are the responsibility of the person eating or preparing the fungus for others. If it is apparent from a post that the fungus is for eating or smoking etc, the post will be deleted and a warning given. Although many members do eat fungi, no-one would be willing to take someone else's life into their hands.
- Chris Johnson
- Frequent user
- Posts: 348
- Joined: Sun Jul 26, 2015 2:06 pm
- Location: Outer Hebrides
- Contact:
Small Brown Fungus
Not getting anywhere with this one, found under mixed woodland (mainly beech), 3 weeks ago.
Cap 17mm
Gills arcuate, adnexed, L=48ish
Stipe 35 x 2mm
Small spores hyaline, smooth, 2.9-3.3 x 1.7-2.0, Q=1.7
Basidia 4-spored
Cheilocystidia abundant, mainly fusiform, one or two metuloid
Caulocystidia cylindrical in clusters
Any pointers welcome.
Regards, Chris
Cap 17mm
Gills arcuate, adnexed, L=48ish
Stipe 35 x 2mm
Small spores hyaline, smooth, 2.9-3.3 x 1.7-2.0, Q=1.7
Basidia 4-spored
Cheilocystidia abundant, mainly fusiform, one or two metuloid
Caulocystidia cylindrical in clusters
Any pointers welcome.
Regards, Chris
Re: Small Brown Fungus
Chris
Some of the cystidia look to have crystals at the top. The only groups I know with white spores and that form of cystida are Malanoleuca Strobilurus and Lentinus unfortunately none have spores so small.
Mal
Some of the cystidia look to have crystals at the top. The only groups I know with white spores and that form of cystida are Malanoleuca Strobilurus and Lentinus unfortunately none have spores so small.
Mal
- Chris Johnson
- Frequent user
- Posts: 348
- Joined: Sun Jul 26, 2015 2:06 pm
- Location: Outer Hebrides
- Contact:
Re: Small Brown Fungus
Mal
Thanks for looking. Spent hours on this one
Regards
Chris
Thanks for looking. Spent hours on this one

Regards
Chris
-
- Frequent user
- Posts: 405
- Joined: Fri Jul 17, 2015 7:55 am
- Location: Jena (Germany)
- Contact:
Re: Small Brown Fungus
Hello Chris,
this seems to be a very remarkable fungus, so it's worth spending even more time. I hope you keep an exsiccate?!
I admit that I don't have any clue to this up to now, but I have no books aroud me at the moment. But I will keept that in mind and have more looks on what genus it might be.
The combination of such small spores and metuloid cystidia is very striking and not know to be at the moment.
The fruitbody looks collybioid macroscopically, and the scurfy stem would make Tephrocybe a possibility. There are species with very small spores - but I don't know of any with metuloid cystidia. I'm not sure if they have cystidia at all ....
May be it would worth looking wether the spores are amyld and wether the basidia show siderophilic granulation. Clamps are present as is wonderful visible in the last foto.
best regards,
Andreas
this seems to be a very remarkable fungus, so it's worth spending even more time. I hope you keep an exsiccate?!
I admit that I don't have any clue to this up to now, but I have no books aroud me at the moment. But I will keept that in mind and have more looks on what genus it might be.
The combination of such small spores and metuloid cystidia is very striking and not know to be at the moment.
The fruitbody looks collybioid macroscopically, and the scurfy stem would make Tephrocybe a possibility. There are species with very small spores - but I don't know of any with metuloid cystidia. I'm not sure if they have cystidia at all ....
May be it would worth looking wether the spores are amyld and wether the basidia show siderophilic granulation. Clamps are present as is wonderful visible in the last foto.
best regards,
Andreas
- Chris Johnson
- Frequent user
- Posts: 348
- Joined: Sun Jul 26, 2015 2:06 pm
- Location: Outer Hebrides
- Contact:
Re: Small Brown Fungus
Hello Andreas
Unfortunately I no long have the specimen.
Tephrocybe does seem to be a close fit but neither Funga Nordica nor B & K reference the genus. Moser is useful but no spores that small.
Regards, Chris
Unfortunately I no long have the specimen.
Tephrocybe does seem to be a close fit but neither Funga Nordica nor B & K reference the genus. Moser is useful but no spores that small.
Regards, Chris
- Lancashire Lad
- Frequent user
- Posts: 902
- Joined: Wed May 13, 2015 11:59 am
- Location: Red Rose County
- Contact:
Re: Small Brown Fungus
Hi Chris,
Don't know if you will have seen it already, but there is another Tephrocybe key in addition to Moser, that's available as PDF download if you have electronic access to BMS Journals: -
"The Genus Tephrocybe Donk in Britain, PD Orton. - Bulletin of the British Mycological Society - Volume 18, issue 2, pages 114-120.
However, that key too doesn't have any species with spores as small as yours.
(PM me an email address if you don't have electronic access).
Regards,
Mike.
Don't know if you will have seen it already, but there is another Tephrocybe key in addition to Moser, that's available as PDF download if you have electronic access to BMS Journals: -
"The Genus Tephrocybe Donk in Britain, PD Orton. - Bulletin of the British Mycological Society - Volume 18, issue 2, pages 114-120.
However, that key too doesn't have any species with spores as small as yours.
(PM me an email address if you don't have electronic access).
Regards,
Mike.
Common sense is not so common.
- Chris Johnson
- Frequent user
- Posts: 348
- Joined: Sun Jul 26, 2015 2:06 pm
- Location: Outer Hebrides
- Contact:
Re: Small Brown Fungus
Hello Mike
Many thanks for looking into references.
I am a member of the BMS and do have electronic access, which I came to latterly.
Much appreciate your help.
Regards, Chris
Many thanks for looking into references.
I am a member of the BMS and do have electronic access, which I came to latterly.
Much appreciate your help.
Regards, Chris
- Chris Yeates
- Frequent user
- Posts: 873
- Joined: Tue May 26, 2015 7:01 pm
- Location: Huddersfield, West Yorkshire
Re: Small Brown Fungus
That Tephrocybe key is out of date reallyLancashire Lad wrote: ↑Mon Nov 12, 2018 2:34 pmHi Chris,
Don't know if you will have seen it already, but there is another Tephrocybe key in addition to Moser, that's available as PDF download if you have electronic access to BMS Journals: -
"The Genus Tephrocybe Donk in Britain, PD Orton. - Bulletin of the British Mycological Society - Volume 18, issue 2, pages 114-120.
However, that key too doesn't have any species with spores as small as yours.
(PM me an email address if you don't have electronic access).
Regards,
Mike.
"You must know it's right, the spore is on the wind tonight"
Steely Dan - "Rose Darling"
Steely Dan - "Rose Darling"