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MARINE ALG^ OF DEVON. 147
have now 16 specimens of it, but hope to get some more within the
next five months. It is not a very rare fern, neither is it common,
and it is so distinct that a man, even if he were bhndfolded, could
make it out by tlie touch."
MARINE ALG^ OF DEVON.
By E. M. Holmes, F.L.S.
In a list of the Marine Algae of Devonshire, by E. Parfitt,
published in the ' Transactions of the Devonshire Association for
the Advancement of Science, Literature, and Art,' the number of
species recorded is given as 318. From an examination of the
species enumerated, it seems doubtful whether Mr. Parfitt has
seen the list by Mr. J. Boswarva, of Plymouth, from which some
additional localities for Devon algte might have been quoted ; and
it may therefore be useful to place those on record, and to add to
them some other species which I myself have met with in Devonshire.
The additions to Mr. Parfitt's list are marked with an
asterisk.
Pijcnophycus tuhcrculatus Huds. Mt, Batten, Boswarva. Abundant
at Bovisand and Wembury, also near Plymouth, E. M. H.
*Fuciis platycarims Born. Plymouth and Torquay, E. M. H.
Arthrocladia villosa Duby. Firestone Bay, Plymouth, J. Gatcomhc.
'^'Laminaria flexicaxiUs Le Jol. Common at Plymouth, Torquay,
&c., E. M. H.
*Carpomitra Cabrera; J. Ag. Plymouth Sound, Boswarva.
'^Dictyota ligulata J. Ag. (new to Britain, 1889). Torquay,
E. M. II. (Also Charmouth and Lyme Regis, in Dorsetshire).
Leathesia Berkeleyi Harv. Sidmouth, E. M. H.
EaJj'sia verrucosa J. Ag. It is this species, and not R. demta,
which occurs on the Devon coast. I have seen no British specimen
of Pi. deusta, which appears to be quite a northern species. — *i?.
clavata Farl. Torquay, E. M. II.
Sphacelaria J'usca Agardh. This plant is not so rare as Mr.
Parfitt supposes. I have found it abundantly at Ilfracombe, Torquay,
&c., but it always grows in very shaded pools. — S. olivacea
J. Ag. Ladram Bay, Sidmouth, E. M. II.
* Ertocarpiis simplex Cr. On Codium tomentosuiii, ^ludstone Bay,
Brixham, E. M. II. — ''•E. viresrens Born. Torquay, E. M. II.—
*E. reptans Kjell. Exmouth, K. M. II.— E. Crouani Thur. ]\ISS.
Near Brixham, /','. ^l. II.
'^I'olysiphonia rhunensis Born. Ilfracombe, /•.'. M. H.— P. pulviiiata
Ilarv. The species so named by Mr. Parfitt is in all probability
I'. scrtuUirioiileti J. Ag., which is not uncommon on the Devon
coast, at Torquay, Plymouth, &c., E. M. II.
Lomentarin rejle.ea J. Ag. This plant is abundant at Hele, near
Ilfracombe, and occurs also at Sidmouth and Torquay, /•.'. M. H.
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