OF SOUTH AUSTRALIA. 
47 
I should not have mentioned G. flexilis, described by Lamouroux from 
Tasmania, had not Madam Weber Van Bosse determined the plant sent 
to her by Reinbold from Guichen Bay as this species. J. Agardh doubted 
whether it was different from C. hypnoides. The trunk shows (according 
to Lamouroux) intervals of bare spaces free from ramenta nearly up to 
the apex; the ramenta are forked below the middle. The only specimens 
known are Labillardiere’s from Tasmania and those sent to Reinbold by 
Dr. Engelhardt from Guichen Bay. 
Section Sedoideae. 
Fronds with globose ramenta. 
Caulerpa sedoides (R. Brown) C. Agardh. 
Surculus slender, smooth, branched. Fronds erect, simple or sparingly 
branched, 2.5-10 cm. high, bearing sessile ramenta. Ramenta loosely 
distichous below, leaving the rachis nude in places, denser above, rising 
from all sides of the rachis, spherical or obovate. 
Growing like little branches of currants, along the crannies and cracks 
of the rocks, from just below low-water mark downwards; the shore forms 
the more stunted. 
All round the coasts of Australia; Tasmania and New Zealand. Islands 
of the Pacific. Ceylon. 
Caulerpa vesiculifera Harvey. 
Surculus stout, glabrous, with strong rhizoids. Fronds erect, simple or 
sparingly branched, to 20 cm. long, densely clothed with imbricate 
ramenta disposed in about 8 longitudinal series. Stem and branches long, 
cylindrical, rather obtuse at the apex. Ramenta globose or obovate, smaller 
than in C. sedoides , collapsing when dry. 
Distribution. — South Australia: Guichen Bay. Victorian Coasts. Tas- 
mania. 
Has much the same habit of C. Brownii, but is easily distinguished by 
its vesicular ramenta. 
Caulerpa simplicius cula C. Agardh. 
Surculus smooth, rather stout. Fronds erect, elongate, cylindrical, in 
simple spikes or corymbose] y branched, to 15 cm. high, with blunt tips, 
bearing small obovate imbricated ramenta in 12 to 16 vertical series. The 
ramenta not more than half the size of those of C. vesiculifera , collapsing 
when dry. Intermediate forms occur between these two species. 
Western and South Australia, Victoria and Tasmania. 
