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Keying Conocybe

Posted: Wed Oct 25, 2017 5:21 pm
by adampembs
Conocybe : trying to key one out with Funga Nordica 2012 and reached a stage in the key where an ammonia reaction producing crystals is mentioned. Can anyone help me with this, what am I looking for?

Re: Keying Conocybe

Posted: Wed Oct 25, 2017 7:19 pm
by Chris Yeates
From Hausknecht's Fungi Europaei Conocybe and Pholiotina Monograph (2009):
Hausknecht 01.jpg
Hausknecht 02.jpg
Hausknecht 03.jpg
HTH
Chris

Re: Keying Conocybe

Posted: Wed Oct 25, 2017 9:05 pm
by adampembs
Brilliant, thanks Chris :)

Re: Keying Conocybe

Posted: Sun Oct 29, 2017 1:24 pm
by roy betts
The crystals my be very few or numerous: sometimes you can see them growing! Their production can be quite quick or may take hours. It is worth checking the next day as sometimes it takes this long. I sometimes key out C. mesospora (negative ammonia reaction) only to find some crystals have appeared hours later! (and so have to look again at the key).

Re: Keying Conocybe

Posted: Sun Oct 29, 2017 2:19 pm
by Chris Yeates
The key work is http://www.pemberleybooks.com/product/c ... -11/19251/ - not cheap, but not excessively expensive as these things go for nearly 1000 pages.
Open access, thankfully, and giving a relatively straightforward breakdown of this group is "Infrageneric division of the genus
Conocybe - a classical approach
": http://www.zobodat.at/pdf/OestZPilz_15_0187-0212.pdf. There is much of interest in this paper. It's interesting to note that phylogenetic studies have suggested that Pholiotina is more closely related to Bolbitius than it is to Conocybe.
Chris