Growing on rocks close to the sea
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Hi, what would you say it makes this plant different from one species of the Carex flava group?
Sorry about the delay in replying. I overlooked your comment. I am not a Carex specialist but can see that some Carex flava group have long bracts like C. extensa. Looking quickly at the key in the BSBI Sedges book, it seems that at least the lower and middle utricles in each spike of flava are patent or deflexed. For extensa it seems that all utricles are more or less erect or appressed.
Excuse the rushed reply.
I have to go out now but will look at this more closely when I get back and message you again.
A character that makes C. extensa immediately recognisable is the greyish-green colour and saltmarsh habitat. The yellow sedges are a brighter, sometimes yellowish green and only C. serotina is often coastal, occurring in dune-slacks.
Again repeating that I am not a specialist in Carex, the BSBI Handbook says "there is no other plant in this habitat [ie coastal] that could be easily mistaken for C. extensa....."
It goes on to say that "The exceedingly long bracts, grey-green utricles and deeply channelled, glaucous leaves contrast with the yellow-green colours in C. viridula and are usually sufficient to identify C. extensa."
It seems that the deeply channelled leaves separate C. extensa from all members of the C. flava group.
Hope this helps,
Thanks a lot for these details!
Lat/Lng: 50.3654, -4.1421
OS grid ref: SX477539