276 
THE SEAWEEDS 
Lucas described the following nine-siphoned species from New South 
Wales, but did not discuss its relation to other species, so it cannot at 
present be included in any of the above groups : 
Polysijjhonia compacta Lucas. 
Proc. Linn. Soc. N.S.W., XXXVIII., p. 56. 
Fronds forming cushion or moss-like patches covering and following the 
inequalities of rocks; patches variable in outline, irregularly oval, up to 
8 cm. or more in diameter, sometimes confluent. Lower layer forming a 
firm imbricate reticulum; the upper, to 10-15 mm. high, consisting of free 
ramuli, very soft. The primary filaments, somewhat stouter than the 
secondary, creep over the rock surface, and are attached to it by numerous 
simple or forked colourless rhizoids, up to five from one articulation ; each 
rhizoid terminating in an expanded adhesive disc. Nine siphons. Each 
articulation separated by a narrow colourless zone. Tetrasporangia 
extending in a series of up to nine or more in the centre of the ramuli, 
not moniliform; fertile ramulus often branched, sometimes bearing an 
immature fertile ramellus. 
Farm Cove, Port Jackson, New South Wales. In rock pools left by 
falling tide. 
Below are listed the Australian species once placed in Polysiphonia, and 
which have now been removed to other genera. Descriptions of South 
Australian species will be found on other pages of this book, and all are 
dealt with by De Toni. 
P. rufolanosa TIarv. = Falkenbergia rufolanosa (Harv.) Schmitz. 
P. vagabunda Harv. = F. vagabunda (Harv.) Falk. 
P. ericoides Harv. = Bryocladia ericoides (Harv.) Schmitz. 
P. tasmanica J. Ag. = Pityopsis tasmanioa (Sond.) Falkenberg. 
P. valida J. Ag. = Chiracantha valida (J. Ag.) Falk. 
P. pennata J. Ag. = Pterosiphonia pennata (Roth.) Falk. 
P. cladostephus Mont. = Brongniartella australis (Ag.) Schmitz. 
# P. Patersonis Sond. (P. spinosissima Harv.) = B. (?) Pater sonis 
(Sond.) De Toni. 
P. dendritica Ag. = Dipterosiphonia dendritica (Ag.) Falk. 
P. prorepens J. Ag. = Dipterosiphonia prorepens (J. Ag.) Falk. 
P. filipendula Harv. = Herposiphonia filipendula (Harv.) Falk. 
P. monilifera H. and H. = H. monilifera (II. and H.) Falk. 
P. pectinella Harv. >= II. pectmella (Harv.) Falk. 
P. prorepens Harv. = II. prorepens (Harv.) Schmitz. 
P. rostrata Sond. = II. rostrata (Sond.) Falk. 
P. versicolor H and H. = II. versicolor (H. and LI.) Falk. 
(De Toni includes P. scopulorum Harv. and P. Pecten Aresch. under 
II erposipiionia . ) 
P. calothrix Harv. = Lophosiphonia calothrix (Harv.) De Toni. 
P. neglecta Harv. = L. (?) neglecta (Harv.) De Toni. 
P. prostrata Harv. = L. prostrata (Harv.) Falk. 
* Recent examination shows that, this species has hairs confined to the ramuli ends, 
and therefore belongs to the Cancellatae group of Polysiphonia, as originally placed. 
