466 FLOKA ANTAECTICA. [Fuec/ia, the 



frond ; 2, portion of ditto showing the two modes of escape of the spores, either free or contained in the original 

 cells : very highly magnified. (The quaternary division of the spores was not seen in this dissection.) 



5. LAMINAEIA, Lamomx. 



1. Laminaria /ascia, Ag., Syst. p. 273. Harv. Phyc. Brit. t. 45. 



Hab. Hermite Island, Cape Horn, and the Falkland Islands ; not common. 



These specimens do not appear to differ from British ones in any particular. The L. fascia is a northern, but 

 not Arctic species, found along the shores of England, Ireland, and the German Ocean ; and under the name of 

 L. debilis, it also inhabits the Mediterranean Sea. 



6. CAPE A, Montagu . 



1. Capea birnncinata, Montagn. in Flor. Canar. Crypt, p. 140. t. 7. Laminaria biruncinata, Bory in 

 Buperrey Foy. Bot. Crypt, p. 101. 1. 10. L. radiata, £. exasperata, Turner Hist. Fuc. vol. ii. p. 16. 



Hab. Hermite Island, Cape Horn ; /. E. Bavis, Esq. 



Our solitary specimen is ban-en, and does not appear different from the plant of the Canary Islands, New 

 Holland, and New Zealand. 



We quite agree with Dr. Montagne as to the propriety of separating this genus from Laminaria and EcHonia, 

 which latter is its Cape of Good Hope representative, and is reported to be a native of the Falklands, probably 

 erroneously ; as is the station assigned to the Macrocystis of the Canary Islands. On the other hand, there is 

 no reason why the Macrocystis should not accompany the Capea, whose principal parallel is certainly in the Southern 

 Hemisphere. 



The fructification of Ecklonia is scarcely known ; we have seen what appear to be young sori in the form of 

 opaque thickened spots on the frond. A transverse section shows the cortical layer to be thickened and formed of 

 parallel tubes full of granules, analogous to what such fructification as Montagne's beautiful analysis of Capea repre- 

 sents would be in an immature state, but we are extremely doubtful of our analysis. 



7. DESMARESTIA, Lamomx. 



1. Desmarestia media, Grev., Synops. p. 40. Sporoclmus medius, Agardh, Ic. Alg. p. 259. 1. 16. 

 D. anceps, Montagne in Toy. au Pole Slid, Bot. Crypt, p. 5 1 ? 



Hab. Cockburn Island, (lat. 64° 12' S., long. 57° W.); floating in the sea, abundant. 



One of the most Antarctic of plants and probably common in many latitudes ; for, under other names, it has been 

 noticed as a native of Peru, of various parts of the Pacific Ocean, and even north to the Arctic circle. It is singular 

 that a plant of this small genus, and from which the present is perhaps not specifically distinct, the B. acideata, 

 should be among the highest Arctic Alga, inhabiting Spitzbergen in 80° N. lat. Montagne's B. anceps, confessedly 

 described from imperfect specimens, is very probably this plant, having been gathered in nearly the same locality : 

 or else it is the B. ligtdata, a Cape Horn species. 



2. Desmarestia viridis, Lamourx. — Flor. Antarct. Pt. 1. p. 178. 



Var. (3. distans ; ramis remotioribus. 



Hab. Hermite Island, Cape Horn, Falkland Islands, and Kerguelen's Land ; very abundant. Var. /3, 

 Kerguelen's Land. 



