254 
THE SEAWEEDS 
is not very obvious. Colour a full rosy-crimson, discharged in fresh water, 
becoming a brown-red in drying. Substance extremely soft and sub- 
gelatinous. 
South Australia (Encounter Bay, Streaky Bay, Eastern Bays), Victoria, 
Western Australia (Vasse). 
ACANTHOPHORA Lamouroux. 
Fronds erect, terete, forming lax intricate tufts, filiform, vaguely 
branched; the branches alternate or secund, very patent, elongate, distant, 
hut little divided, gradually attenuate, furnished along their whole extent 
with minute, tooth-like, alternate, spirally inserted ramuli, one to two lines 
apart, cleft at the apex into 3-5 short spine-like teeth. Substance carti- 
laginous. No outward appearances of any joints, but internal. Structure 
of the frond similar to Maschalostroma. 
Acanthophora dendroides Harvey. 
Frond bushy, ramuli irregular, pyramidal, setaceous, the ramelli above 
the base more setaceous. The bristles in the adult plant spreading, 
subulate. Stichidia set regularly on the setaceous rachis, subulate, in the 
apices of the almost denuded ramelli. 
Western Australia (Rottnest Island), Indian Ocean. 
o' 
CCELOCLONIUM J. Agardh. 
Frond filiform, cartilaginous, dendroid, opaque, coated with polygonal, 
irregularly placed cells. Axis articulated, polysiphonous. Ramuli clavae- 
form, much constricted at their insertion. Cystocarps ovate. Tetra- 
sporangia tripartite, formed irregularly in the clavate ramuli. 
Cceloclonium verticillatum (Harv.) J. Agardh. 
= Chondria verticillata Harvey. 
Attachment discoid. Stems densely tufted, 7 cm. to 13 cm. long, nearly 
2 mm. in diameter, simple or umbellately compounded, each partial umbel 
of 4-5 rays or more, round the base of which a whorl a fascicled ramuli are 
frequently developed. The secondary branches are long and virgate, simple 
or umbellately compounded, and are either whorled at short intervals with 
simple, club-shaped ramuli, or set closely with such ramuli. Ramuli 6 mm. 
to 12 mm. long, nearly 2 mm. in diameter, strongly constricted at base, very 
obtuse, patent. Cystocarps ovate, sessile on the ramuli. Tetrasporangia 
either scattered, or brought together in an irregular sorus, near the middle 
of the ramulus. Colour a dull purplish-brown becoming darker in drying. 
Substance succulent. 
South Australia (Investigator Strait, Eastern Bays), Western Australia, 
Victoria (Port Fairy), Tasmania (Georgetown). 
