ALGÆ ANTARCTICA. 273 
plicibus subulatis _erecto-patentibus, articulis ramorum 
diametro 4-5-plo, ramulorum subduplo longioribus ; favellis 
magnis bilobis ad apices ramorum sitis. 
Has. Cape Horn, in deep water. 
Parasitie, half an inch long, vaguely branched, rose red, 
flaccid and membranous. . Ramuli-issuing from every joint, 
usually three, rarely two or four, slender, short and simple- 
joints of the stems very long. Favelle large. : 
56. Callithamnion flaccidum, nobis; fronde gracillima mem- 
branacea flaccida rosea decomposite ramosa, ramis pri- 
maris secundariisque oppositis! vel alternis! -elongatis 
patentibus distichis, ramulis: ultimis brevibus simplicibus 
oppositis vel secundis patentibus apice incurvis; articulis 
ramorum primariorum diametro multoties, secundariorum 
6-10-plo, ramulorum ae e polis roseis 
aveniis. s 
var, f. alternifolium ; ramis- hid sinc n vel se- 
cundis, rarissime hic illic oppositis. 
Has. Cape Horn, in deep water; both varieties. 
Frond 2.3 inches long, very slender, membranous and flac- 
cid, of a beautiful rose colour, much branched, the branches 
lateral and distichous. In var. a, branches and ramuli are 
almost invariably opposite; while in £. they are as regularly 
alternate or secund, the inner ramuli of the branches being 
abortive, those along the outer edge only developed. In 
Other respects the two varieties are identical. This species 
is allied to C. Turneri, but is a much: rte end more 
branching plant. | 
57. Callithamnion scoparium, sabia’ ; caule basi crasso inar- 
ticulato filis intertextis flexuosis stuposis vestito flabella- 
fim ramoso, ramis primariis cauli similibus, secundariis 
articulatis pellucidis tenuibus strictis pinnatis et bipinnatis 
creberrimis quadrifariis, e primariorum apicibus fasciculatim 
fuge: apice oe articulis diametro 2-3 plo logis 
us. 
var. f. ramulosum; pinnis apice ramulis secundis. or- 
natis. Lo d 
VOL. IV, ! x 
