Gary 
186 CRYPTOGAMIA ANTARCTICA. | [Puegia, the 
1. ClADOTHELE Decaisnei, Hook. fil. et Harv. ; in Lond. Journ. Bot. vol. iv. p. 293. (Tan. CXC.) 
Haz. Berkeley Sound, Falkland Islands; in the sea. 
Radix fibrosa? Frondes 4-6 une. alte, ceespitosee, filiformes, seta porcina crassiores, cylindracez, flexuose, 
plus minusve ramose, ramificatione valde irregulari. Rami primarii elongati, seepe simplices, ramulis longis simpli- 
cibus sepissime secundis curvatis v. incurvis vix attenuatis laxe donati. Substantia tenax. Color sordide viridis, 
siccitate cinerascens :—chartee laxe adheeret. 
A very curious plant, certainly related to Codium, especially to C. simpliciusculum, by the structure of the 
papille that cover its surface, and from which we have derived the generic name. The axis is, however, of very 
different structure from that of Codium or of any other genus of Siphonee, and more closely resembles that of Polysi- 
phonia, In the specific name we wish to pay a deserved compliment to our friend M. Decaisne, who has thrown 
much light on the affinities of the corallinoid .4/ye, especially those related to Siphonee. 
Puare CXC.—Fg. 1, plant of the natural size; 2 ramus and ramuli; 3, longitudinal, and 4, vertical sec- 
tion of branch; 5, cellular tissue of ditto :—magnified. 
49. BRYOBSIS, Lama. 
1. Brxopsis plumosa, Grev. Alg. Brit. p. 187. 
Var. 8. Arbuscula, J. Agardh, Alg. Medit. p.21. B. Arbuscula, Ag. Sp. Alg. p. 451. 
Has. Hermite Island, Cape Horn, and the Falkland Islands; abundant, both varieties. 
The branches of the frond are narrower and pinnated nearer to the base, with the ramuli more uniform and 
shorter in some of the specimens than in others. 
2. Bryopsis Rose, Ag. Syst. Alg. p.179. Bory in Duperrey Voy. Bot. p. 211. t. 24. fig. 1. 
Has. Hermite Island, Cape Horn, and the Falkland Islands. 
None of our specimens equal those figured by Bory in size, though they coincide in all other respects with the 
descriptions published by that author and Agardh. Our opinion is, that the present plant is not distinct from the 
B. plumosa, but is a large state of that very sportive species, depending probably on the temperature of the ocean it 
inhabits for its development. Some other species of this highly Protean genus are equally difficult to define; and we 
cannot but expect that a copious suite of specimens from different shores and depths will considerably diminish it. 
43. VAUCHERIA, DC. 
1. Vaucueria Dillwynii, Ag.; Grev. Alg. Brit. p. 191. t. 19. Conferva frigida, Dillwyn, t. 19. 
Has. Christmas Harbour, Kerguelen’s Land ; on the ground amongst the Penguin Rookeries. 
The patches are very extensive and rather more glaucous than others collected near Edinburgh, with which the 
Antarctic specimens appear otherwise entirely to agree. The capsules are not always globose, as figured by Mr. 
Hassall, (Brit. Fresh-water Algee) but often, if not more generally, horizontally elongated and gibbous ; as shown in. 
Greville's * Alge Brit.’ (l. c.) where there is an excellent figure of this species. 
2. VAUCHERIA cespitosa, Ag.; Grev. Alg. Brit. p. 194. 
Has. Berkeley Sound, Falkland Islands; on the moist borders of fresh-water lakes, and in pendent 
masses from dripping rocks. 
These specimens are dried very badly, so that we have not much confidence in our identification of the species. 
fal 
