Ser. RHODOSPERME. Fam. Helminthocladea. 
Pratt CCLXXV. 
GALAXAURA CLIFTONI, Zar. 
Gry. Cuar. Frond dichotomous, thinly incrusted with carbonate of lime, 
constricted as if jointed, or continuous, composed of longitudinal, 
colourless, interwoven, and anastomosing medullary filaments, and 
closely placed, inflated or tabular, coloured peripheric cellules. Fruit 
unknown.—Gataxaura (Lamzx.), a classical name; one of the 
Oceanide of Hesiod. 
Frons dichotoma, calcareo-incrustata, articulato-constricta v. continua, plus minus 
transversim rugulosa, ex filis medullaribus tenuibus hyalinis longitudinalibus 
intertextis anastomosantibus, et cellulis periphericis subuniseriatis coloratis 
inflatis liberis v. complanatis, arcte coherentibus, formata. Fructus ignotus. 
Gataxaura (Microthoe) C7i/tonz ; frond cartilagineo-carnose, scarcely cal- 
careous, terete, dark brownish-purple, many times forked, fastigiate, 
tomentose ; superficial filaments once or twice forked, coloured, cy- 
lindrical, articulated, the jomts once and a half as long as broad. 
G. (Microthoe) Cliftoni; fronde cartilagineo-carnosa vix calcarea tereti fusco- 
purpurea decomposite dichotoma fastigiata tomentosa, tomenti filis furcatis colo- 
ratis cylindraceis articulatis, articulis diametro sesquilongioribus. 
Gaxaxaura (Microthoe) Cliftoni, Harv. in Herb. T. C. D. 
Has. At Fremantle, West Australia, G. Clifton. Attached to Codium to- 
mentosum, at Warnamboul, H. Watts, n. 100. 
Geroer. Distr. West and south coasts of Australia. 
Descr. foot and base of the stem not known to me. Fronds (probably several 
from the same base) 6—8 inches long, and as much in the expansion of the 
branches, a line or rather more in diameter, terete, many times forked, fas- 
tigiate, with rounded axils and blunt apices. Every portion of the frond is 
densely coated with horizontal, hairlike, jointed filaments, issuing from the 
longitudinal threads of which the frond is chiefly formed. The aspect to 
the naked eye is as if the branches were covered with a velvety pile of 
threads. These are once or twice forked, cylindrical, articulated, the arti- 
culations coloured, and about once and half as long as broad. Fructification 
unknown. Colour, a dark brownish-purple or dingy red. The sudstance is 
far less calcareous than in most other species of Galaxaura, and is firmly car- 
tilaginous and elastic, shrinking somewhat in drying. The plant adheres 
firmly to paper in drying. 
