436 ALGZ OF TASMANIA, 
times longer than broad. The Stichidia are exceedingly mi- 
nute, especially so in reference to the large size of the plant, 
and are borne on long pedicels or accessory ramuli which 
spring from the more divided of the jointed ramuli, Each 
stichidium is of less diameter than the ramulus from which 
its pedicel springs, and might easily fit into one of its joints. 
—Of this plant I have seen but a single imperfect specimen, 
but its characters are so distinct that there can be no doubt 
of its claim to specific distinction. It is not closely related 
to any Australian species yet noticed, but is allied in many 
characters to the European D. coccinea, from which the 
smooth stem, the long joints, and the fruit will readily dis- 
tinguish it. The colour is a pinky red, given out in fresh 
water. - 
9, Polysiphonia byssoclados, Marv.; caule ultra-setaceo, 
elongato sub-dichotomo, articulato, basi nudo; ramis de- 
composito-ramosissimis, sensim attenuatis; ultimis elon- 
gatis, simplicibus; totis ramellis monosiphoniis dichotomis 
articulatis roseis densissime vestitis ; articulis caulinis 
diametro triplo longioribus, rameis diametro equalibus v. 
brevioribus ; keramidiis ovatis, sessilibus, Cladostephus 
australis, Ag! Syst. p. 169.—Griffithsia australis, Ag! 
spec. 2. p. 135.—Bindera cladostephus, Dne! (fide spec € — 
Cl. Decaisne.) 
George Town, V. D. L., R. Gunn, Esq., n. 1267.—Stem 
6-10 inches long, thicker than hog's bristle in the lower 
part, and about setaceous in the principal divisions, dis- 
tinctly articulated in every part, seven tubed; the mam 
branches naked at base, somewhat dichotomous or UT - 
gularly multifid, with a fan-shaped outline, their upper pat 
and all the lesser divisions densely clothed with quadri- 
farious, horizontally patent, single tubed, dichotomous ramelli | 
or filaments, which are about a line in length, and are © - 
pecially crowded at the tips of the branches, and there form |. 
a dark spot or tuft. Keramidia ovate, sessile on the branches 
at the base of the multifid ramelli, Colour red, drying 9. 
brown.—This species has to the naked eye so much ee 
