Australian Chlorophyta — Womersley 
391 
ft SmcWir f S* 
X&)\ 
Fig. 6. Pseudocodium australasicum n. sp. Type. 
filaments mostly erect in the upper part. In- 
dividual filaments several cm. long., 500-700 
ju thick with a wall 6-10 n thick, usually ex- 
panding slightly to a central thickest part 
from which clustered branches arise, one 
(rarely two) from each segment of the main 
filament. Cross septa close together in this 
branching region, far apart elsewhere. Lateral 
branches mostly simple, 170-350 /z wide, 
emitted from just below a septa, without a 
basal cross wall. Descending rhizoids absent. 
Thallus magnus, ad 50 cm. latus et 7 cm. 
crassus. Filamenta plures cm. long., 500-700 
/x diam., membrana 6-10 /x crassa, crassissima 
media parte cum pluribus ramis, unus ramus 
(interdum 2) segmento. Rami semper fere 
simplices, 170-350 /z diam., orti infra septum, 
sine septo ad basem. Rhizoides descendens 
non producentes. 
type locality: Smoky Bay, on the west 
coast of Eyre Peninsula, South Australia, 
drift. 
type: AD (No. A 13,615, H. B. S. Wom- 
ersley, January 21, 1951). Isotypes distributed 
under numbers A 13,615, A 13,616. 
distribution: Known only from Smoky 
and Denial Bays (in MEL), west coast of 
Eyre Peninsula. 
C. magnus is one of the largest species of 
Cladophoropsis , especially in the size of the 
whole thallus. It shows some resemblance to 
C. herpestica (Montagne) Howe, which occurs 
on exposed coasts of Eyre Peninsula, but 
differs in its broader filaments, localisation of 
branching, and absence of descending rhiz- 
oids. Specimens in the Melbourne National 
Herbarium from Denial Bay, under the no- 
men nudum of Cladophora tietkinsii Sonder, 
show that Sonder had recognised this as a 
distinct species. 
Cladophoropsis hulbosa n. sp. 
Figs. 8, 9 
Thallus erect, densely tufted, to 10 cm. 
high, arising from a matted bulbous base 
