14 THE MARINE ALGAE OF ESSEX,
HIMANTHALIA, Lyngb.
Himanthalia lorea, Lyngb., "Hydr. Dan.," p. 36, tab. 8.
Walton, 1867, E. G. Varenne; Harwich, Felixstowe, G. P. Hope.
HALIDRYS, Lyngb.
Halidrys siliquosa, Lyngb., "Hydr. Dan.," p. 37. tab. 8.
Felixstowe, G. P. Hope. It is interesting to note that Ray
mentions the occurrence of this species (the "Fucus angustifolius,
vesiculis longis siliquarum aemulis, narrow-leaved wrack, with pod-
like bladders," of his "Synopsis Methodica Stirpium Britannicarum,"
which first appeared in 1690) at Harwich, near which it is still to be
found after a lapse of 200 years.
Dictyotaceae, Thur.
DICTYOTA, Lamour.
Dictyota dichotoma, Lamour, in "Journ. de Bot.," 1809,
t. ii. Walton, 1867, E.G. Varenne ; Felixstowe, G. P. Hope.
TAONIA, J. Ag.
Taonia atomaria, J. Ag., "Spec. Alg.," 1, p. 101. Felix-
stowe, G. P. Hope.
PADINA, Adans.
Padina pavonia, Gaillon, "Dict. d'Hist. Nat.," liii., p. 371. I
give this species as an Essex plant on the authority of Ray. In the
third edition of his "Synopsis," p. 43, n. 14, speaking of this
plant—Fucus maritimus Gallo pavonis pennas referens—he says it
is found "prope Harwicum." In the Buddie Herbarium there is
also a specimen with the note "a me collect. prope Harwicum."
I presume that Harwich is the town meant, as on page 4 of the first
edition the following sentence : "In littore Essexiano non procul
Harvico," where there can be no doubt that Harwich is intended,
occurs. There is no reason why Padina should not grow on the
Essex coast, where many other southern species are to be met with.
RHODOPHYCEAE.
I. BANGIOIDEAE, Rosenv.
Porphyraceae (Kutz.), Thur.
PORPHYRA.
Porphyra laciniata, Ag., "Syst. Algar," p. 190. Maldon,
1867, E. G. Varenne; Harwich, G. P. Hope; Felixstowe, G.
Massee : Clacton, E. A. B,