Found at Ilfracombe and on the quay at Penzance by J.
Ralfs, Esq., from whom we have received our specimens. We
have also dredged what we believe to be the same plant in deep
water at Weymouth, attached to TJlva lactuca and other algae.
The species is undoubtedly allied to Callithamnion Pluma,
but is readily distinguished not only by habit but by the
very different fructification. Mr. Harvey had, no doubt, good
grounds for referring the species to Agardh’s plant, though
the characters in the Species Algarum, which are however confessedly
drawn up from imperfect specimens, are not very
distinctive. According to Mr. Ralfs it is probably a perennial
species.—M. J. B.
