OF SOUTH AUSTRALIA. 
29 
Cladophorci Baveyana Reinbold. 
A slender light-green form, at its thickest 100 p to 120 /z in diameter, 
he uppermost branches spreading in a corymb; the ultimate ramelli 30 ^ 
o 40 /z thick and often secund; cells, lower up to 12 times, and upper 4-8 
imes as long as broad; apices obtuse. 
RHIZOCLONIUM Kuetzing. 
Jointed creeping simple filaments, with scattered short branchlets, which 
serve as hook-like attachments to other filaments or to some other support. 
Cells mostly 2 or 4 nucleate, with thick firm walls. The filaments are 
slenderer than those of Chaetomorpha , usually less than 50 y wide, and 
occur in tangles. Nothing is known of the method of reproduction. 
R. hieroglyphicum (Ag.) Kuetz. is common in sluggish streams and on 
the dripping faces of cliff rocks. Probably marine forms will be detected 
on the. coasts. 
Fig ii . — Rhizoolonium riparium (European). Fig. 12 — Apjohnia 
laetevirens. 
