74 
THE SEAWEEDS 
Cystopliora subfarcinata (Mert.) J. Agardh. 
Stem flat, decompound, densely pinnate. Pinnae retrofract, bearing 
abbreviated intricately pinnate pinnules, 2.5 cm. long. Vesicles rare among 
the pinnules, obovoid, the junior apiculate, small to 2 mm. long. Receptacles 
forming the ultimate ramuli of the pinnae, filiform as in C. monilif era, with 
three or four distant toruli which bear the few, irregularly grouped con- 
ceptacles. The rachis of the receptacle is produced into a sterile terminal 
beak or awn. 90 cm. or more high. 
Western Australia, South Australia, Victoria, Tasmania. 
Cystopliora polycystidea Areschoug. 
Stem flat. Pinnae emerging from the plane face, retrofract. Pinnules 
slender, dichotomous-pinnate, the ultimate segments filiform. Vesicles 
numerous, elongate-ellipsoid, acute at both ends, about 4.5 mm. long, borne 
mostly near the base of the rachides of the branches in racemes. Recep- 
tacles filiform, distantly torulose, ending in a sterile beak, about 1 cm. long. 
90 to 120 cm. high. 
South Australia, Victoria, Tasmania, extending to Jervis Bay in New 
South Wales. 
Cystopliora paniculata (Turn.) J. Agardh. 
Stem terete, decompound branching. Pinnae and pinnules emerging on 
all sides. Ultimate pinnules crowded, filiform, simple or forked. No 
vesicles. Receptacles in a panicle at the apex of the ramuli ; cylindrical, 
warted, distinct from the vegetative ramuli. Several feet high. 
Abundant in South Australia, Victoria, and Tasmania, and on the East 
coast as far as Sydney. 
CYSTOPHYLLUM J. Agardh. 
A genus very near to Sargassum , with short caulis, emitting many 
branches, some shorter bearing alternate midribbed leaves with crypto- 
stomata, others longer pinnately much branched bearing vesicles and 
ultimately receptacles. The vesicles are not independent organs but are 
formed as swellings in the upper leaves. 
Cystophyllum muricatum (Turn.) J. Agardh. 
Rachides bristling with glandular growths. Lower leaves linear, entire, 
with a row of cryptostomata on each side of the midrib, narrow, to 7.5 
cm. long, pointed. Upper leaves filiform, to 2.5 cm., with the vesicles 
swelling like beads on a thread. Vesicles, usually three, but occasionally 
one, two, up to seven, the extremity of the leaf projecting beyond the 
