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Old 23-08-2008, 09:43 AM
mykonik mykonik is offline
Officer of the Wild Empire
 
Join Date: Mar 2008
Location: Yeovil, Somerset
Posts: 842
Re: Possible Alder Rollrim

Quote:
Originally Posted by juliejam View Post
Found this single chap growning along side the curb in small amount of soil with hedge row and oak nearby.

Help with ID needed..





Many thanx

Julie
It's ordinary Paxilus involutus Julie.

I'm intrigued to know why you thought that it was Paxillus rubicundulus if (as you say) was found growing alongside the curb and didn't mention anything about any association with it's co-host Alnus glutinosa ??

I guess there wouldn't be alders growing out of the curb or in the hedgerow would there ??

Although often stated in lit. as 'only with birch' it (Paxillus involutus) does seem to be able to exist in areas where it's major co-host (Betula) is absent - it isn't apparently 'absolutely restricted' to that major host but can obviously, on rare occasions, form mycorhizal associations with other tree species !

In fact I found several large basidiomes growing up through paving stones in the middle of the shopping precinct in Yeovil last week, obviously associated with the small group of young lime trees that had been planted nearby.

Having said that, it may be that there is actually more than one species in 'Paxillus involutus' and attempts have been made to split it up in the past - rather like the recent splitting up of 'Boletus chryseneteron' into four autonomous taxa.

I would also point out that you may occasionally find basidiomes of Paxillus involutus fruiting several feet up the trunks of old trees (usually in decay pockets in the wood) but that is something else the literature never mentions ! It has been found on both beech and lime trees in this situation.

Nick
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