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14-08-2009, 12:51 AM
| | Commander of the Wild Empire | | Join Date: Nov 2008 Location: Near Scarborough
Posts: 2,048
| | | Conocybe siliginea?
Does this look like Conocybe siliginea? There is a dearth of photographs of it on the net. Found in unimproved grassland, sheep pasture.  
The cap is distinctively wrinkled. Spores were big, a few were 20-25.5um, though the majority were in the range 14.1-17.1 x 7.8-9.3um, Qav = 1.8. Cheilocystidia skittle shaped, caulocystidia also mainly skittle shaped.  spores  cheolocystidia  caulocystidia.
I'm not sure whether the basidia were 2 or 4 spored as I didn't find any with spores attacked or recently departed  . Caulo cystidia were generally skittle shaped and found near the stipe apex and midway down the stipe.
Melanie |
14-08-2009, 08:53 AM
| | Commander of the Wild Empire | | Join Date: Nov 2008 Location: Near Scarborough
Posts: 2,048
| | | Re: Conocybe siliginea?
I've done the ammonia test and it seems to have produced quite a few crystals, so I guess that means it is ammonia positive, and therefore a different Conocybe. So it is back to the keys ........ My gut feeling is that it is 2 spored, as there were a few cases of immature spores seemingly in twos.  |
14-08-2009, 10:45 AM
|  | Commander of the Wild Empire | | Join Date: Jan 2009 Location: Jena - Germany
Posts: 1,363
| | | Re: Conocybe siliginea?
Hello Melanie,
those are not the crystals that are produced by Ammonia.
In Ammonia there are needle-like crystals in those NH3-positive species. I don't think that your species is a NH§-positive one. But I will have a look later this day with the monograph of Hausknecht.
It would be important to know, whether there are hair-like cystidia on the stipe apex additionally to the lecythiforme ones.
best regards,
Andreas
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15-08-2009, 12:51 AM
| | Commander of the Wild Empire | | Join Date: Nov 2008 Location: Near Scarborough
Posts: 2,048
| | | Re: Conocybe siliginea?
Quote:
Originally Posted by mollisia  Hello Melanie,
those are not the crystals that are produced by Ammonia.
In Ammonia there are needle-like crystals in those NH3-positive species. I don't think that your species is a NH§-positive one. But I will have a look later this day with the monograph of Hausknecht.
It would be important to know, whether there are hair-like cystidia on the stipe apex additionally to the lecythiforme ones.
best regards,
Andreas | Thanks for describing the NH3 crystals shape. I've marked up my book to remind me in future ....
I've had a couple more looks at the stipe apex. Whilst the lecythiform ones are the most common I have come across a few others of different shape, at least I think they are caulocystidia:     | | |
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