OF SOUTH AUSTRALIA. 
289 
POLYZONIA Suhr. 
Attachment a callous disc; frond often dwarf, pinnate, branched; 
branches long, the lower ones creeping, with clearly defined wings or keel 
rising from the ventral surface; wings and keel composed of many cells, 
secund, proliferous, with a definite margin, subcostate, transversely zoned, 
with cauliform polysiphonous ramelli above the axils. Fruit solitary above 
the axils. Cystocarps ovate, opening through the carpostomium of the 
pericarp. The carpospores are pyriform, in the terminal articulations of 
the filaments. Stichidia filiform, whorled. Tetrasporangia arranged in 
straight, longitudinal rows. Antheridia sublanceolate, composed of minute 
spores. 
Polyzonia elegans Suhr. 
Frond sparsely branched, rarnuli alternately pinnate, phyllodia secund, 
with a semi-ovate circumference, with the lower edge straight, entire ; the 
upper edge with three or four strongly marked serrations, transversely 
zoned with a central vein. Stichidia developed on the concave side of the 
rarnuli, crested or tufted. 
South Coast of Australia, South Africa. 
CLIFTONAEA Harvey. 
Frond stipitate, formed of secundly proliferous, halved, pectinate 
phyllodia. Phyllodia costate, with diverse sides; one side flat, areolate, 
membranous, very entire; the other pectinato-partite. 
Cliftonaea pectinata Harvey. 
Frond 5 cm. to 14 cm. long, irregular, phyllodia sometimes membranous, 
entire; sometimes the secondary phyllodia are filiform, subulate, 1 cm. to 
3 cm. wide. Stichidia borne on the midrib, or the concave side of the 
secondary phyllodia, carrying tetrasporangia. Colour bright-red, adheres 
imperfectly to paper. 
South Australia (Kangaroo Island (north coast)), West Australia 
(Garden Island). 
Cliftonaea semipennata (Lamour.) J. Agardh. 
Phyllodia scimitar-shaped, semipinnate, their laciniae cuttrate, flat, 
toothed on the lower margin, shorter than the breadth of the lamina. Stem 
2 cm. to 5 cm. long, coriaceous, rigid when dry, arched, naked, or more 
or less fringed on the concave side. Phyllodia numerous, springing from 
the convex side of the stem, 5 cm. to 10 cm. long, scimitar-shaped, the older 
ones with a valid costa, the younger with a very slender one. The outer 
or convex side of the phyllodium is winged with a semi-lanceolate, trans- 
versely striate, delicately membranous lamina, composed of oblong, hexa- 
gonal cellules, set in rows. The internal side is closely pinnulated with a 
double row of cultrate laciniae; these are flat and leaf-like, and composed 
of oblong cellules ; they are nearly straight and entire on the upper margin, 
curved and denticulate on the lower ; shaped like a coulter. Colour 
crimson to purple, substance membranous, rather rigid, adheres imperfectly 
to paper. 
South Australia (Sturt Bay, Encounter Bay). 
