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| 1 | 2 |  » Stats |
Members: 50,139
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| | Welcome to our newest member, jo0ls | |  | 
13-12-2008, 12:21 AM
|  | Commander of the Wild Empire | | Join Date: Jun 2007 Location: SW Ireland
Posts: 1,665
| | | Couple of Usnea .....
 Back again!
Are these two photos of Usnea florida (sorry for poor first photo, if I'd known the apothecia was there I'd have focused on it, didn't realise until checking later!)  
2. Both below Usnea cornuta in varying states of decay?  
3. Hypogymnia tubulosa?  |
13-12-2008, 06:25 PM
|  | Commander of the Wild Empire | | Join Date: Apr 2007
Posts: 1,238
| | | Re: Couple of Usnea .....
The presence of the apothecium does favour florida. Certainly the detailed picture doesn't show features I'd expect on subfloridana.
I can't pick out the constrictions where side branches leave the main branch which is characteristic of U. cornuta, so cannot help with 2.
3 certainly looks like a Hypogymnia, with the thallus in a tubular shape. No soredia so reluctant to go any further.
posch |
13-12-2008, 09:30 PM
| | Commander of the Wild Empire | | Join Date: Jun 2007 Location: SW Ireland
Posts: 1,665
| | | Re: Couple of Usnea .....
Hi posch and thanks for the reply. Sorry the photos weren't too great - below is an enlarged bit from the second Usnea 2. query, there does seem to be some constriction .....  |
14-12-2008, 09:19 AM
| | Commander of the Wild Empire | | Join Date: Apr 2007
Posts: 1,238
| | | Re: Couple of Usnea .....
Quote:
Originally Posted by JennyS  Hi posch and thanks for the reply. Sorry the photos weren't too great - below is an enlarged bit from the second Usnea 2. query, there does seem to be some constriction ..... | More me trying to wriggle out of coming to a conclusion. I still think this is a job for a hand-lens. I can see constrictions on the main stem, but can't convince myself about the side stems. AlanS made a remark that U. cornuta has a rather different jizz from, say, U. subfloridana, but I don't have that experience. I also have a specimen of the latter species in a pot next to the computer, which makes it a lot easier to do comparisons with photos. | | |
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