OF SOUTH AUSTRALIA. 
387 
Family RHIZOPHYLLIDACEAE (Montagne) Schmitz. 
CIIONDROCOCCUS Kiitzing. 
Frond compressed, ancipitous, irregularly pinnate, sometimes subcostate, 
very gelatinous, somewhat cartilaginous (very easily dissolved ), consisting 
of three layers; an articulate siphon forming the axis, the intermediate 
layer of oblong-rotund cells, the cortical cells minute, arranged in rows on 
very short filaments. Cystocarps developed on the tubercles of the frond. 
Tetrasporangia are formed on the nematheciform tubercles, slightly raised, 
irregularly cruciate or zonately divided. 
Chondrococcus squarrosus Kiitzing. 
Frond elongate, base stipitate, flattened, subdichotomous, segments more 
or less elongate, slender, linear, slightly dilated towards the apices, patent, 
pinnate; the pinnae divaricate, unequal, some short and simple, others long 
and pinnulated. Cystocarps small, immersed or carried laterally. Sub- 
stance cartilaginous. Colour golden. 
Victoria (Phillip Island). 
Family SQUAMARIACEAE (Zanard.) J. Agardh. 
PEYSSONNELIA Decaisne. 
Frond flat, horizontally expanded, rooting by fibres from the lower sur- 
face, composed of two strata of cells ; the lower stratum of horizontal 
cylindrical cells, arranged in cohering, longitudinal filaments ; the upper of 
similar cells, set in vertical cohering filaments. Fruits of both kinds lodged 
in superficial warts (nemathecia) ; carpospores roundish in moniliform 
strings; tetrasporangia cruciate. 
Peyssonnelia novae-hollandiae (Kiitz.) Harvey. 
Frond 3 cm. to 5 cm. diameter, fleshy-membranous, the whole frond 
affixed at the base, otherwise free and covered to the margin with a cal- 
careous crust; deeply incised, multifid, the laciniae expanded in circles, 
each lacinia narrow below and sublinear, cuneately dilated above and mul- 
tifid; margin reflexed. Nemathecia expanded widely above the surface of 
the frond, depressed-plane, carrying tetrasporangia among the very fine 
filaments; tetraspores large, pyriform and cruciate. Colour purplish. 
Does not adhere to paper. 
South Australia. 
