OF SOUTH AUSTRALIA. 
207 
2. Frond medium, 7 cm. to 12 cm. long, 1 mm. to 
2 mm. diameter, somewhat compressed, 
verticillate branching, but not strongly. The 
ultimate segments of axis and branches pro- 
jecting without ramuli. Colour dark-purple C. tasmanica 
Harvey. 
South Australia (Encounter Bay, Port Noarlunga, Investigator 
Strait, Eastern Bays). 
3. Frond large, 18 cm. long, to 5 mm. diameter, 
compressed, bi-tri-pinnate, the main rachis 
conspicuously persistent. Primary branches 
alternate, 5 mm. to 6 mm. distant, dis- 
tichously spread. Dissepiments conspicuous. 
Colour a bright-purple. Substance gelatinous 
succose C. insignis Lucas. 
So far, only met with in the estuary of the Derwent, Tasmania. 
Fronds cylindrical or slightly compressed, vaguely branching, with a 
narrow tubular canal in the interior, gelatinous-membranaceous. Com- 
posed of two strata of cells, the interior of jointed threads which traverse 
the tube, the peripheric of rounded-angular cells in several series, the outer 
smaller, rounded and coloured. Cystocarps within an external pericarp, 
nucleus simple oblong, girt by a labyrinth of fine reticulating and 
anastomosing threads. Tetrasporangia aggregated in dilated branches, 
large, spherical, triangularly divided. 
Fig. 72 . — Champia tasmanica. 
CHYLOCLADIA Greville. 
