OF SOUTH AUSTRALIA. 
173 
constricted and whorled lesser branches. Lower internodes linear oblong, 
terminal acute. Height 6 cm. to 30 cm. Substance soft and juicy. Colour 
deep full-red, becoming dark and brownish on drying. 
South Australia (Holdfast Bay, Encounter Bay, Investigator Strait, 
Eastern Bays), Victoria, Tasmania. 
Rhabdonia clavigera J. Agardh. 
Frond almost all tubulose (with longitudinal filaments) ' and jointed by 
regular strictures with verticillate branches, above subcorymbose. Lower 
joints of the stem very long, narrowly obconical, upper oblong or oval. No 
thickened base of the stem. The plant has the habit of Erythroclonium 
Muelleri. Height 10 cm. 
South Australia (Eastern Bays), Victoria. 
SOLIERIA J. Agardh. 
Very close to Rhabdonia , constructed of the same three strata. Cystocarps 
and tetrasporangia evolved in gelatinous, soft, fusiform ramuli. The tetra- 
sporangia are divided zonately according to Agardh and Harvey, but Kylin 
says they are cruciately divided. I confess myself baffled by the sporangia 
of S. robusta; they are small and generally not divided at all, and I have 
been unable to find one definitely cruciate or definitely zonate. 
Fig - . 44 . — Solieria robusta. 
