OF SOUTH AUSTRALIA. 
279 
lamina appears to be obliquely striate from the midrib to the margin, and 
especially at the apices of the laciniae.it is marked with radiating striae; 
these striae' are internal veinlets, forming part of the axial system of the 
membrane. The membrane is composed of a double row of quadrate cells ; 
the midrib of several rows of similar but smaller cells. Cystocarps are 
tufted, pedicellate, ovate, and contain a tuft of pedicellate, pyriform spores. 
The stichidia, also tufted, are fusiform or clavate, simple and contain a 
double row of tetraspores. The substance is firmly membranous, glossy 
when dry, and adheres to paper. The colour is a dark vinous-purple, chang- 
ing to black when dry. 
South Australia (LeFevre Peninsula, Encounter Bay, Eastern Bays), 
Tasmania. 
Family tx*MA«t<K«K 
iX.i, 
Tnw . .. 
X'< !*«*». 
Rwww n- (* 4 % |U.y *o4 «?. 
Fig. 126 . — Pollexfenia crispata. 
Pollexfenia crispata (Zanard.) Falkenberg. 
Frond branching rapidly from the base, dichotomous, the margin very 
waved, and fertile frond covered with short hairs. Stichidia short and 
claviform, the fruit in the apices in four long regular rows. 
South Australia (Holdfast Bay, Encounter Bay), Victoria (Port 
Phillip). 
Pollexfenia crenata J. Agardh. 
Frond dwarf, almost lanceolate, pinnate and irregular on the margins; 
the younger fronds overlap very much at the base, gradually less so as they 
grow. The fully developed plant is sublanceolate, the margins subcrenate. 
Stichidia rising chiefly from one frond ; this may be due to chance, or the 
age of the plant. 
South coast of Australia. 
