dejayM's picture

Coralline Algae

Observed: 26th June 2013 By: dejayM
Biological Recording In ScotlandHighland Biological Recording GroupOrkney Biodiversity Records Centre
dejayM’s reputation in PlantsdejayM’s reputation in PlantsdejayM’s reputation in PlantsdejayM’s reputation in Plants
engulfing clam

Encrusting, gorgeous off-pink and hard algae. Mostly found on rock but here shown on Kelp stalk.
The 'limpet' in P1 seems to be engulfed.
EDIT - updated Hyperlink
I am not quite as certain as my ID panel suggests but there is a close lookalike here -

Species interactions

No interactions present.


gramandy's picture

i think..

...pic 3 is definitely phymatolithon purpureum and possibly 4, not sure about the first 2

see some of the postings

both verified by expert algologist (from NHM)

dejayM's picture


You could be right - I was worried.
You do seem very confident!
But I see that you have no agreements to yours (only 'expert' confirmation) - nothing new in that of course!
I will reconfigure and remove the last two pics.
So, for anyone coming here - goodness I hope someone else DOES, then two pictures of crusty red algae on rock have been removed

gramandy's picture

if you're..

...happy to share these pics - I can get my expert NHM algologist to confirm these (he's been with the natural history museum as an algologist for approx 30 odd years and is a renowned expert on seaweeds). I am lucky because he lives 2 miles down the road and is approachable.

Up to you - it does mean an almost certain ID - he is also amenable to 'I don't know or I'm not sure' - which in my book is always reassuring as most of us are probably not sure if we're truthful.

I am also intrigued why you are "I'm sure as I can be" when these encrusters are little horrors to be sure of at all. You have obviously come on quicker than I have - but that's no mean feat..

gramandy's picture

as soon as you get ... confirmation - everyone runs away. They thought they were the experts and unfortunately none of us are.

dejayM's picture


Yes please, check your email again soon as the pictures are there waiting for you.
I changed my tune recently from showing lack of confidence to being, well, more certain!
To be frank, I don't think it matters much which you opt for, except to say we should be more confident!

gramandy's picture

not here yet...

...sure they will be - I will forward to Ian and let you know.

ChrisMcA's picture

New Doris link

for Lithophyllum incrustans

dejayM's picture


Thanks Chris, quite useful. I am researching the family Corallinaceae for a new Observation on the 27th March 2017

gramandy's picture


says yes to these 2 pics although not 100% because he would of liked a sample to look at, so you have my agreement

dejayM's picture


Origin Dec. 2015
Well, thank Ian for me please. Looking back I wish I'd've spent more time in those beds and must wade out again this coming year. I suspect there will be a lot of mysteries!
Added - It's true, lots of mysteries and few answers.
I am back, researching, because I am about to launch a new observation for Corallines

dejayM's picture


Revisiting in 2017, after some pretty intensive study, I can no longer support the Species..
We cannot be certain without good support, just what species is involved in the crusty reds. It has recently been discovered that 2 sometimes more species co-habit to form these crusts.