Essex Field Club on Facebook

Video about the Club

Depressaria daucella
find out more... Depressaria daucella Copyright: Peter Furze

Essex Field Club
Essex Field Club
registered charity
no 1113963
HLF Logo A-Z Page Index

Visit Our Centre

EFC Centre at Wat Tyler Country ParkWe are normally open to the public at our centre at Wat Tyler Country Park every Saturday, Sunday and bank holiday 11am-4pm, check. We are also open on Wednesdays 10am-4pm.
Autumn recording Record Grey Squirrel Record Fly Agaric
Record Ivy Bee
Record Wild Teasel
Record Sloe, Blackthorn
Record Garden Spider Record Nigma walckenaeri spider

Your Forum

This forum has now been more or less replaced by the Club's Facebook page at
Essex Field Club on Facebook




The weblog below is for naturalists to use to report interesting sightings, ask questions, report on field meetings and generally post pictures and any information or questions generally relevant in some way to the wildlife and geology of Essex. You will need to register and be logged-on to post to the forum, and you need to upload pictures first, for use in posts. Find out more


Fri 13th August 2010 15:34 by Graham Smith
Agrocybe rivulosa at Ingatestone
August 4th : Somebody has recently been fly tipping large piles of woodchips on roadside verges at Ingatestone; an anti-social act, of course, but one not without its benefits for an amateur mycologist! One such pile, at the entrance to a small wood known as The Grove (TL647007), soon began to sprout fungi; a species that initially - with its rather viscid, radially striate, amber coloured cap - suggested a Coprinus, and will continue to recall one to me long after they have all been transfered to another group, which probably won't be long delayed! Agrocybe rivulosa Copyright: Graham Smith As the cap expanded it turned paler - to white, tinged with pale yellow brown - and in so doing exposed a large, loosely hanging ring high on the stem. It retained its markedly striate; or to be more exact, rugose (coarsely wrinkled) appearance though. Agrocybe rivulosa 2 Copyright: Graham SmithThe gills were whitish when young, then pale grey, finally dark grey-brown; the few mature spores ellipsoid and 11-12um in length. Most of the mature specimens were old before their time due to the dry weather, hence the difficulty in finding mature spores. The stem was fibrillose (covered with thin fibres); white at first but browning from the base with age, and on some specimens markedly bulbous at the base, although not on the one illustrated, whose base was fused with its immediate neighbour. The pale to medium brown, thick-walled spores (among other things) identified it as an Agrocybe and from there it keyed out fairly straighforwardly as Agrocybe rivulosa in 'Funga Nordica' (2008); its habit of growing on large piles of woodchips, together with the strikingly rugose cap, leaving few other options. Agrocybe rivulosa 3 Copyright: Graham Smith This was formerly a rare species in Britain; indeed, the BMI Checklist lists only one collection, from Derbyshire in 2004. Since then it has been turning up in increasing numbers, invariably on woodchips, and the latest on line BMI database contains around 140 records. None, however, relate to Essex, but enquiries by Tony Boniface, the County Recorder, revealed that Geoffrey Kibby had found it recently on woodchip piles behind the Epping Forest Field Centre.  As it was until recently a rare find there are few illustrations in the more popular Field Guides but I eventually found a good photograph on the 'Wild About Britain' website. A full description was taken and the specimens retained. One to look out for!
link
 

Archives:

Aug 2019
Jan 2019
Sep 2018
Jul 2016
Oct 2015
Jul 2015
May 2015
Apr 2015
Mar 2015
Feb 2015
Jan 2015
Dec 2014
Oct 2014
Sep 2014
Aug 2014
Jul 2014
May 2014
Apr 2014
Mar 2014
Feb 2014
Jan 2014
Dec 2013
Nov 2013
Sep 2013
Aug 2013
Jul 2013
Jun 2013
May 2013
Apr 2013
Mar 2013
Feb 2013
Jan 2013
Dec 2012
Nov 2012
Oct 2012
Sep 2012
Aug 2012
Jul 2012
Jun 2012
May 2012
Apr 2012
Mar 2012
Feb 2012
Jan 2012
Dec 2011
Nov 2011
Oct 2011
Sep 2011
Aug 2011
Jul 2011
Jun 2011
May 2011
Apr 2011
Mar 2011
Feb 2011
Jan 2011
Dec 2010
Nov 2010
Oct 2010
Sep 2010
Aug 2010
Jul 2010
Jun 2010
May 2010
Apr 2010
Mar 2010
Feb 2010
Nov 2009
Oct 2009
Aug 2009
Jul 2009
Jun 2009
May 2009
Apr 2009
Mar 2009
Feb 2009
Jan 2009
Nov 2008
Oct 2008
Sep 2008
Aug 2008
Jul 2008
Jun 2008
May 2008
Apr 2008
Mar 2008
Feb 2008
Jan 2008
Dec 2007
Nov 2007

current posts