OF SOUTH AUSTRALIA. 
161 
POLYCOELIA J. Agardh. 
Frond gelatinous-carnose, flat, dichotomous, laciniate or sub-pinnately 
decompound, composed of two strata, the medullary of a single layer of 
very large cells, separated by thick gelatinous walls, the cortica] of arti- 
culated, densely anastomosing vertical threads. Cystocarps closed, 
immersed in the frond. Tetrasporangia evolved within the cortical stratum, 
cruciately divided. 
Polycoelia Ultimata J. Agardh. 
Frond laciniate, palmatifid or sub-pinnate ; the segments separated by a 
wide sinus. Segments 7 mm. to 15 mm. wide. Colour red. 
Western Australia, South Australia (Eastern Bays), Tasmania. 
Polycoelia chondroides J. Agardh. 
Frond thick fleshy, sub-pinnately dichotomous in a flexuous rachis. 7 cm. 
to 8 cm. high. Colour purple. 
South Australia (Waterloo Bay, Eastern Bays). 
KALLYMENIA J. Agardh. 
Frond widely expanded in a foliaceous membrane, composed of three 
strata, the medullary of interwoven and anastomosing filaments, the inter- 
mediate of large roundish cells, the cortical of minute vertically-seriated 
coloured cellules. Cystocarps sunk in the frond, containing a compound 
nucleus, formed of several nucleoli or masses of spores. Tetrasporangia 
scattered among the cortical cellules. 
Kallymenia cribrosa Harvey. 
Frond with a short stipe, expanding into a rounded lamina, 30 cm. to 
60 cm. long and broad. The frond is always pierced with holes from pin- 
Figf. 33 . — Kallymenia cribrosa. 
Fiff. 34 . — Kallymenia tasmanica. 
