Conocybe sp?

Please try to include photos to show all parts of the fungus, eg top, stem, and gills.
Note any smells, and associated trees or plants (eg oak, birch). A spore print can be very useful.
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adampembs
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Conocybe sp?

Post by adampembs » Fri Nov 10, 2017 9:50 am

On behalf of someone else ~

20-30 of these popped up in the garden lawn (amongst Agrostis and Rhytidiadelphus mostly), seemingly overnight! I'm suspecting it's a Conocybe species, but if anyone can direct me to a key for this genus (that assuming I'm on the right track) then I'll give it a go...
Cap size <2cm
Downy stem

Basidia 4 spored
Spores 15-16 x 7-8 microns
Caulocystidia measurements for body width = 12-15 and head width =7-13 (n = 6)

Photos of caulocystidia go from stem top downwards - the leycthiform ones are majority but there are also clavate and hair like ones.

We are thinking section mixtae and probably C. pubescens but the cap is very yellow and the gills are fairly distant. Funga Nordica says gills should be crowded while Collins (Buczacki et al) says "fairly distant" - the bioimages examples photos look much more crowded. [edit: having checked the photos there, I'm not convinced he has pubescens, as two examples dont have hairy stems and the third has no leythiform stem cystidia]

Any thoughts?
Attachments
cap.jpg
gills.jpg
gills2.jpg
habitat.jpg
spore-print.jpg
caulocystidia.jpg
Caulocystidia - top
caulocystidia2.jpg
Caulocystidia - top
caulocystidia3.jpg
Caulocystidia - top
caulocystidia4.jpg
Caulocystidia - top
cheilocystidia.jpg
Cheilocystidia
spores.jpg
Spores 15-16 x 7-8
stem base.jpg
Stem base
stem-base.jpg
Stem base
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roy betts
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Re: Conocybe sp

Post by roy betts » Fri Nov 10, 2017 10:12 am

Galerina clavata.

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Re: Conocybe sp?

Post by adampembs » Fri Nov 10, 2017 10:28 am

Thanks Roy. I was assured there was a germ pore (although I couldn't see one!) :)
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Re: Conocybe sp?

Post by adampembs » Fri Nov 10, 2017 10:35 am

Can G.clavata have smooth spores? [EDIT - watch this space, I think these images were taken using x40 objective. ]
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Re: Conocybe sp?

Post by roy betts » Fri Nov 10, 2017 11:27 am

Can't see a germ pore.
G. clavata is keyed out in BFF7 in the section with spores "asperulate to smooth". The species description says the spores are "verruculose throughout". FND describe the ornamentation as "verruculose to marbled". It's not always easy to tell if spores are completely smooth or slightly ornamented.

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Re: Conocybe sp?

Post by Chris Yeates » Fri Nov 10, 2017 4:09 pm

I agree with Galerina clavata. Don't know if this helps?
Galerina clavata 0a.jpg
by the way the Galerina key in BFF has for a long time been known to be a bit all over the place, Funga Nordica is rather more logical.

Chris

PS this stacked image was produced to show the surface ornamentation:
Galerina clavata 10.jpg
"You must know it's right, the spore is on the wind tonight"
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Re: Conocybe sp?

Post by adampembs » Fri Nov 10, 2017 4:24 pm

Ok thanks both. The ornamentation is quite fine on that stacked image. I can see how we missed it! Nice job there with the plate, Chris! :D
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