250 
THE SEAWEEDS 
pinnae longest, all the divisions alternate and erecto-patent. Pinnules 
\ cm. to 1-| cm. long, linear, truncate. Colour a dark-red. Cystocarps 
terminating the pinnules, ovate. 
Western Australia, South Australia (Encounter Bay, Investigator 
Strait), Victoria, Tasmania. 
CORYNECLADIA J. Agardh. 
Fronds terete, sub-caulescent ; ramuli clavate, vaguely or sub-umbellately 
disposed, cellular, of three strata; inner of sub-stellate anastomosing cells, 
intermediate of round, external of small cells disposed in simple series. 
Cystocarps ovate, transformed from ramuli, with a cellular pericarp and 
osteole. Tetrasporangia in apices of ramuli, aggregated in a transverse 
zone, formed in infra cortical cells ; triangularly divided. 
Corynecladia clavata (Sond.) J. Agardh. 
Fronds 10 cm. to 20 cm. long, 2 mm. thick, subpinnately branched; 
ramuli sparsely fasciculate and branches often densely ramulose; ramuli 
cylindrical-clavate, obtuse. Colour blood-red, substance firm. 
Western Australia, South Australia (LeFevre Peninsula). 
Corynecladia vmbellata J. Ag. 
Fronds 7 cm. to 10 cm. long, sub-umbellate, branches cylindrical-clavate; 
terminal ramuli simple, clavate, obtuse ; articulate in young parts. 
Western Australia, South Australia (Eastern Bays). 
JANCZEWSKIA Solms-Laubach. 
Fronds parasitic, minute, cushion-shaped, surface verrucose; rhizoids 
penetrating host plant. Cystocarps minute, more or less grouped. Tetra- 
sporangia triangularly divided. 
Janczewskia tasmanica Falkenberg. 
Frond large for the genus, with many elongate tubercles conjoining 
together. 
South Australia (Investigator Strait), Tasmania. Occurring on frond 
of Laurencias. 
Subfamily Chondrieae (Kutzing) Schmitz. 
KEY TO THE GENERA. 
Fronds erect, often large and conspicuous, terete or plane, becoming 
excessively branched. 
a. Sterile segments by no means of lax context, poly- 
siphonous axis always evident, 
b. Pericentral siphons 5, large, always corticated 
with minute slender cells in 1 to 2 strata. 
Sporangia not in a longitudinal line, crookedly . 
disposed Cladurus Falk. 
