The English flora - SeaweedAfrica

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308 ALGiE INARTICULATE. [Dumont
1. I. edulis, Bory, (esculent Iridcea); frond subcartilaginous
simple obovate or cuneiform rounded at the apex attenuated at
the base into a short stipes.— Grev. Alg. Brit, p. 158. t. 17.
Halymenia edidis, Ag. Sp. Alg. v. 1. p. 202. Dehsseria edulis,
Lamour.— Ulva edulis, Be Cand.—Fucus cdidis, Stackh.— Turn.
Syn. Fuc. p. 180, Hist. Fuc. L 114. E. Bot. 1. 1307. Hook, in
Fl. Lond. N. Series, cum Ic.
Abundant on the rocky shores. $ . October.
(Irid&a reniformis of Bory and Dr. Greville, will be found under Rhodomenia
in this volume.)
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43. Halymenia. Ag. Halymenia.
Frond nearly flat or cylindrical, gelatinoso-membranaceous,
of a pinky-red colour, more or less dichotomous, the segments
often laciniated. Fructification ; punctiform globules of seeds, imbedded
in the central substance of the frond. Grev. Alg. Brit,
p. 161. t. 17.—Name «>?, ci\ig, the sea, and vftw, a membrane,—
sea-membrane.
1. H. liguldta, Ag. (strap-shaped Halymenia'); frond gelatinoso-membranaceous
almost plane irregularly dichotomous, the
axils rounded, the segments ligulate attenuated towards the
apex and often proliferous at the margin. Grev.—Ag. Sp.
Alg. v. 1. p. 210 (and H. elongata of the same author). Grev.
Alg. Brit. p. 162. t. 17 .— Ulva ligulata, Woodw.—E. Bot. t. 429.
— Ulva rubra, Huds.
Rocks and stones, chiefly on the southern coasts. Norfolk and Suffolk,
and Anglesea. 0. Summer.
2. H.furcelldta, Ag. (forked Halymenia); frond gelatinosomembranaceous
cylindrical repeatedly and uniformly dichotomous
the segments obtuse, not unfrequently proliferous. Ag.
Sp. Alg. v. 1. p. 212. Grev. Alg. Brit. p. 163.— Ulva furcellata,
Turn, in Schrad. Journ. v. 2.J9.301. E. Bot. t.
tia triquetra, Lamour.
1881.
Rocks in the sea, chiefly on the southern and eastern shores of England.
Bantry Bay, Miss Hutchins.
44. Dumontia. Lamour. Dumontia.
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Dumon-
Frond cylindrical, simple or branched, membranaceous,
tubular, gelatinous within, of a red or purplish-red colour.
Fructification ; globides of seeds, attached to the inner surface
of the membrane of the frond. Grev. Alg. Brit. p. 164. t. 17.
Named in honour of M. Dumont, a contributor to the Dictionnaire
a"Hist. Naturelle.
1. jy.Jiliformis, Grev. (filiform Dumontia); frond gelatin osomembranaceous
cylindrical attenuated at each extremity, pin-
nated with branches which are long scattered or subfastigiate
simple and attenuated at their base. Grev. Alg. Brit. p. 165.
t. 17. Dumontia incrassata, Lamour.—Halymenia filiformis,
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