The English flora - SeaweedAfrica

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'290 ALGJE INARTICULATE. [Rhodomenia.
and the fructification, besides its greater thickness, at once remove it
from that plant." Grev.—This species I am unacquainted with.'
4. R. Palmetto,, Grev. (small palmated Rhodomenia) ; stipes
short terete, frond subflabelliform more or less deeply divided
in a somewhat palmated manner, the segments oblong- or cuneate
bifid the :ils rounded the margins entire, capsules in the disk
and margin, scattered granules forming a cloud at the extremity
of the segments Grev. Alg. Brit. p. 88. t. 12. Sphairococcus
Palm., Ag. Sp. Alg. v. \.p. 243. Delesseria Palm., Lamour.,—
Fucus Palm., Esp.— Turn. Syn. Fuc. p. 21, Hist. Fuc.t. 73.
E. Bot. t. 1120—Fucus bifidus, Huds.
On rocks and the stems of the larger Fuci, especially on Laminuria
digitata, chiefly in the south of England. Bantry, Miss Hutchins.
Miltown Malbay, abundant, Mr. Harvey. 0. Summer and Autumn.
Of a fine deep rose colour ; the texture somewhat cartilaginous, so
that the specimens, in general, do not adhere to paper. Length from 2
to 4 or 5 inches ; the taller and narrower specimens have much the
appearance of Sphairococcus membranifolius ; but, as Dr. Greville remarks,
the latter has always a livid purplish hue, and the fructification
is very diffi rent.
5. R. cristdta, Grev. (crested Rhodomenia) ; frond semicircular
membranaceous subdichotomous, the segments somewhat
dilated upwards repeatedly subdivided, the divisions alternate
decurrent laciniate at the ends, capsules sphserical imbedded in
the margin of the frond. Grev. Alg. Brit. p. 89. Sphairococcus
cristatus, Ag. Sp. Alg.
t. 4. Grev. Crypt. Fl.
v. 1. p. 300. Lyngb. Hydroph. Dan.
t. 5. Fucus cristatus, Linn. Herb.—
Turn. Hist. Fuc. t. 23, (excl. the var. y.)— (3. frond harrow
linear throughout. Turn. I. c.
In the sea, upon the stems of Laminaria digitata. Firth of Forth, Dr.
Greville.— /3. On the shore at Wick, Caithness, Borrer and Hook. Berwick,
Dr. Johnston. 0. July.— This is certainly a rare species, and I am
not aware of any other stations than those just mentioned. The var. (Z.
(Turn.) is perhaps the same as Fucus Bangii of Flora Danica, t. 1477.
The var. y. of Mr. Turner is a species of Rytiphlcea, Ag. (R. complanata,
Ag.) and not a native of Britain, that I am aware of, though stated, by
Agard/i, to be found in Ireland
6. R. cilidta, Grev. (ciliated Rhodomenia) ; frond subcartilaginous
more or less lanceolate dichotomous and pinnatifid with
1 Since the above was written, I have seen a specimen from Mr. Arnott,
in the possession of Mr. Harvey; and I do indeed fully agree with the former,
who says, in a letter to me (and contrary to the opinion of Dr. Greville),
" I still think this is the Fucus Sarniensis of Mertens and Koth ; for in the
Catalecta Botanicaare figured distinct capsides very different from the fructification
of the Genus Halymenia."—These capsules are indeed very obscure and
imperfect, as compared with those on Mr. Arnott's specimen, but 1 have no
hesitation in considering the two to be specifically identical ; and these are
both, in my opinion, much more nearly allied to JRhodom. sobolifera than to
palmata. At any rate, I am quite of opinion, that if R. Sarniensis be united
with JR. palmata, so must R. sobolifera and R. polycarpa. The real capsules
have only been found on this latter.
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