OF SOUTH AUSTRALIA. 
169 
Subfamily Solierieae Harvey. 
CONSPECTUS OF THE GENERA. 
A. — Frond terete. 
1. Frond moniliform-articulate. Central axial 
syphon Erythroclonium 
Sonder. 
2. Frond laxly tubulose, branching in all direc- 
tions Rhabdonia 
Harvey. 
3. Frond succulent, fusiform So lieria J. Agardh 
B. — Frond flat, two-edged. 
4. Traversed by a central syphon Areschougia 
Harvey. 
♦ 
5. Frond pinnate, branches mostly opposite . . Tliysanocladia 
Endlicher. 
ERYTHROCLONIUM Sonder. 
* 
Stem terete, its branches constricted as if jointed, composed of an axial 
filament, surrounded by three strata, the medullary of interwoven longi- 
tudinal filaments, the intermediate of several layers of roundish-coloured 
cells, the cortical of very minute vertically seriate cellules. Cystocarps 
sessile, depressed, umbilicate, opening by a central pore, containing within a 
thick pericarp moniliform strings of spores, radiating from a free central 
placenta. Tetrasporangia dispersed through the cortical stratum, zonately 
divided. 
Erythroclonium angustatum Sonder. 
Almost the whole frond constricted articulate, branches verticillate, the 
joints narrow-linear, attenuate at both extremities. Height 5 cm. to 8 cm. 
South Australia (Eastern Bays) and Victoria. 
Erythroclonium Sonderi Harvey. 
Stipes 1 cm. to 3 cm. long, bulbous, breaking suddenly into several 
branches, 10 cm. to 15 cm. long, sub-trichotomously decompound, ramuli 
opposite, the joints elliptic-oblong, clavate, thick and obtuse. 
Western Australia, South Australia (Eastern Bays), Victoria. 
