andrewcowley's picture

Fine brown? seaweed on Mytilus

Observed: 27th August 2011 By: andrewcowleyandrewcowley’s reputation in Plants
bwom-02
bwom-02 1
bwom-02 1 2
bwom-02 1 2 3
bwom-02 1 2 3 4
Description:

A very fine short turf-like seaweed growing in patches on mid-shore Mytilus edulis in N. Cornwall. It appears brown but could possibly be a red.
Photo 3 : Apical cell 16 x 9.5 µm.
Photo 4 : Cells 8 - 12 µm.

Identifications
Species interactions

No interactions present.

Comments

dejayM's picture

Legacy post

Such a detailed post
Very few of Andrew's legacy posts have no ID.
It did not take me long - looking for epiphytes on mussels - to find this, which I hope is the one.
See http://www.marinespecies.org/photogallery.php?album=766&pic=14749
and http://www.seaweed.ie/descriptions/Caulacathus_ustulatus.php
and
https://florabase.dpaw.wa.gov.au/browse/profile/26551

JoC's picture

Caulacanthus

A good ID, dj. New species to me, as it was to Andy it seems. I note M G's i.e link you give says "that the recently found populations of Caulacanthus in Brittany and SW England probably represent an adventive species from the Pacific. " So it may get another name sometime.
It does actually have the look of a Caulacanthus with those pointed apices. What excellent detail Andy posted here, as elsewhere.

Jo

dejayM's picture

thanks

Yes, I enjoy Andy's attention to detail and would have been following him avidly by now. I notice too that he was a curator for EoL http://eol.org/collections/9756
I wish I could add THE Seaweed tag here!