Falklands, etc. ] CRYPTOGAMIA ANTARCTICA. 169 
Of this plant we have very copious suites of specimens, gathered in the localities above enumerated and varying 
in length from 2 or 3, to 4 or 8 inches; most of them are covered with coccidia, though none presents us with a 
single stichidium ; which is the more remarkable, because, in other species of this genus the latter description of fruit 
is the most general. زبس‎ 
Under the P. coccineum, in the first portion of this work, the reasons for abandoning the genus Thamnophora 
are detailed ; whether or not the present plant belongs to Plocamium even, must remain uncertain until the nature 
of the stichidia is known. - : 
20. RHODYMENIA, Grev. 
1. Ruopymenta palmata, Grev.; Alg. Brit. p. 993. Fucus palmatus, Engl. Bot.t. 1306. 
Haz. Berkeley Sound, Falkland Islands; abundant. Hermite Islands, Cape Horn; rare. 
The Dulse, so commonly eaten on the coasts of Scotland, is not an unfrequent sea-weed on the shores of the 
Falkland Islands, where it was quickly recognized by some of the north-country seamen of the ‘ Erebus’ and ‘ Terror.’ 
In Europe its distribution is from the Canary Islands and Mediterranean Sea, to the coasts of Norway and Ireland. 
Dr. Greville mentions that it is a native of the shores of Brazil. 
2. Ruopymenta sobolifera, Grev. ; Alg. Brit. p. 95. . Fucus soboliferus, Eng. Bot. t. 2133. 
Has. Falkland Islands ; in Berkeley Sound, and on the exposed outer sea-coast ; abundant. 
Apparently identical with a sea-weed which inhabits the western shores of Ireland, Scotland, and the Orkney 
Isles, and has also been gathered on the west coasts of France. It is scarcely more than a variety of R, palmata, 
whether occurring in the north or south temperate oceans. i 
3. Ruopymenta corallina, Bory ; in Duperrey Voy. Bot. Crypt. p. 175. t. 16. 
Haz. Christmas Harbour, Kerguelen’s Land; rare. 
We have referred our single specimen, without fruit, to this species; with which it appears entirely to agree. 
The species is not uncommon along the Pacific shores of South America, between the latitude of Concepcion and the 
Equator. 
4. Ruopymenıa Palmetta, Grev.; Alg. Brit. p. 88. t. 12. 
Has. Straits of Magalhaens, D’ Urville ; Falkland Islands, Gaudichaud. 
Of this species we have seen no southern examples. 
5. RHODYMENIA fimbriata, Grev.; Synops. p.48. Spherococcus fimbriatus, Agardh, Spec. Alg. vol. i. 
p. 299. x j 
Has. Falkland Islands, Gaudichaud. 
This again is a plant which we do not recognize amongst the collections brought from the Southern Hemisphere. 
6. Ruopymenta variegata, Montagne; in D Orbigny Voy. p. 22. and 116 in Obs. Halymenia variegata, 
Bory in Duperrey Voy. Bot. Crypt. p. 179. t. 14. R. Hookeri, Haro. in Lond. Journ. of Bot. vol. iv. p. 258. 
R. glaphyra, Suhr, in Flora, 1839, vol. i. p. 69. t. 2. f. ۰ 
Var. a. flabellata ; fronde stipitata rosea v. sanguinea flabellata fere ad basin partita, laciniis manifeste 
flabelliformibus basi cuneatis repetite di-tri- vel palmatim dichotomis, laciniis linearibus 4-3 unc. latis, 
