OF SOUTH AUSTRALIA. 
287 
in length, which spring from minute bulb-like ramuli, disposed quadri- 
fariously on the stem, at distances of from 1 mm. to 2 mm. apart. These 
bulb-like ramuli are eventually, in fertile specimens, changed into stichidia, 
merely becoming larger without alteration of form or loss of their ramelli. 
They are sometimes solitary, but more frequently tufted. A transverse 
section of the stem shows four large tubes surrounded by a thick and dense 
cellular periphery. 
Victoria (Western Port), Tasmania (Georgetown). 
Doxodasya lanuginosa (J. Ag.) Falkenberg. 
Frond 20 cm. to 30cm. long, terete, ramuli pinnate, slender, more or less 
irregular, corticate. In young specimens the ramelli are monosiphonous, 
very setaceous ; most branches bearing stichidia are denuded, those bearing 
cystocarps are almost denuded. Stichidia found towards the lower end of 
the ramelli, developed on the rachis; these stichidia are themselves poly- 
siphonous, sub-lanceolate, bare, carrying tetrasporangia scattered in the 
articulations. Cystocarps subglobose, urceolate; the pericarp solid, 
opaque. 
South Australia (Encounter Bay, Eastern Bays). * 
Doxodasya Lenormandiana (J. Ag.) Schmitz. 
= Dasya Lenormandiana C. Agardh. 
Frond about 30 cm. long, terete, corticate, widely branched, pinnate ; stem 
and large ramuli naked below, the apices and smaller ramuli irregularly 
branched ; ramelli spreading from the cortex are polysiphonous below, mono- 
siphonous above, irregularly pinnate, rigid. Stichidia developed from the 
scarcely changed ramelli, polysiphonous and ecorticate, verrucose. Tetra- 
spores spirally arranged. 
Victoria (mouth of Glenelg River). 
Subfamily Polyzonieae Schmitz. 
EUZONIELLA Falkenberg. 
Branches long, affixed to matrix by a radical disc, totally ecorticate and 
not winged. Branches bearing short unilateral ramuli, free or conerescent 
together. Tetrasporangia in long pod-like, subincurved ramuli, single in 
each segment and in series. Cystocarps evolved on lower, lateral pinnules 
of ramuli or at bases of ramuli, ovoid, sessile. 
Euzoniella incisa (J. Ag.) Falkenberg. * 
= Polyzonia incisa J. Agardh. 
Primary frond prostrate, rooting at the nodes, creeping over other algae. 
From this there rise several erect stems, 1 cm. to 3 cm. long, simple or 
alternately pinnate, articulate ; the articulations scarcely so long as broad, 
composed of six cells surrounding a central cavity. Ramuli alternate, 
horizontally patent or somewhat recurved, pectinate on the upper side ; the 
laciniae four or five, somewhat lanceolate, tessellated with three rows of hexa- 
gonal, oblong cells. Cystocarps broadly ovate, subsessile, formed from the 
