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| 1 | 2 |  » Stats |
Members: 50,155
Threads: 82,346
Posts: 853,238
Top Poster: glsammy (15,069)
| | Welcome to our newest member, Bluepjs | |  | 
14-02-2012, 02:36 PM
| | Officer of the Wild Empire | | Join Date: Sep 2007 Location: Caldbeck, Cumbria
Posts: 766
| | | Crustose lichen
It is many years since I last looked at lichens but I thought I would start again, beginning with my garden. I had forgotten how difficult they are 
There are large ( 400mm diam ) irregular patches of this on sandstone slabs on top of my wall. Grey with white prothallus, areolate, apothecia irregular with brown disc 1-2 mm diam , K negative.
I'm sure it's a nice easy common one but it would be good to have some help to get me going again.  
Many thanks
Peter |
14-02-2012, 04:08 PM
|  | Commander of the Wild Empire | | Join Date: Jun 2007 Location: SW Ireland
Posts: 1,668
| | | Re: Crustose lichen
Hi Peter - Probably Ochrolechia parella.
A mainly coastal species that is also found on siliceous upland rocks, gravestones etc.
There are a couple of similar Ochrolechia but its the C rather than the K reaction you need to separate them. Ochrolecia parella
Last edited by JennyS; 14-02-2012 at 04:12 PM.
|
14-02-2012, 04:46 PM
| | Officer of the Wild Empire | | Join Date: Sep 2007 Location: Caldbeck, Cumbria
Posts: 766
| | | Re: Crustose lichen
Thanks Jenny
I do still have my old 2005 copy of Dobson & O.parella looks right. I just need to familarise myself with the key again.
I haven't got any bleach in the house at the moment, which is why I hadn't tested it, but I'll get some tomorrow.
I'll probably be posting alot more over the next few days until I get more confident , so I hope that will be OK.
Peter | | |
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