260 ALGH ANTARCTICA. 
form the most striking feature of the species, which otherwise 
resembles some of the aspects of R. Hookeri. In structure the 
frond has an affinity with that of R. polycarpa, but the fruc- 
tification is abundantly different. Some of the specimens are 
very much smaller, being only two inches high, with segments 
a quarter inch broad. 
22. Rhodomenia dichotoma, nobis in Flor. Antarct. v. 1. 
Has. Campbell’s Island. 
23. Phyllophora cuneifolim, nobis ; fronde stipitata lato- 
cuneata v. flabelliformi integra v. emarginata, e disco v. 
apice frondes consimiles emittente. 
Has. Falkland Islands: rare. 
Frond stipitate; stipes flattened, short, gradually expand- 
ing into the broadly wedge-shaped, or inversely deltoid frond, 
which is of a horny membranous substance and pinky red 
colour, about 13-2 inches long, an inch or 14 inches broad, 
either truncate and entire or obtusely emarginate, or some- 
times erose. From the disc or apex of this primary frond, 
others exactly similar arise, and these in their turn produce 
others, so that the plant finally becomes an irregularly 
branched chain of fronds several inches inlength. Fruit un- 
known. This may only be a very broad state of Phyllophora 
Brodiei (Fucus Brodiæi, Turn. t. 72) a point which cannot be 
fully determined till the fruit be discovered. It is at least a 
very strongly marked variety, and coming from the Southern 
Ocean we deem it safest to give it a distinctive name. 
24. Gracilaria? obtusangula, nobis; radice fibrosa, frondibus 
purpurascentibus cæspitosis è basi ramosissimis intricatis 
gracilibus subcylindricis subcompressis flexuosis flaccidis 
carnoso-membranaceis irregulariter dichotomis, axillis ob- 
tusis sæpissime latis, ramis decompositis sensim attenuatis, 
ramulis filiformibus v. subulatis acutis, ultimis sæpe secun- 
dis, fructu. . . .? 
var. B. tenuior, ramis minus flexuosis nec intricatis 
axillis patentibus vel divaricatis. 
Has. Cape Horn and the Falkland Islands. 
Frond 4-6 inches high, + line in diameter at base, filiform 
