386 
THE SEAWEEDS 
whole frond the margin is densely fringed with slender branches, 2 cm. 
to 10 cm. long; these ramuli taper to the base and apex; the frond is 
composed wholly of filaments; those of the axis are longitudinal, densely 
packed, interwoven and in firm gelatine ; those of the periphery are many 
times forked. Cystocarps are immersed in the ramuli at the base of the 
peripheric filaments. Tetrasporangia on separate plants, hidden among the 
extremities of the filaments of the ramuli, cruciate. Colour dull brownish- 
purple. This is the largest species of the genus. 
Victoria (Western Port). 
Nemastoma Feredayae Harvey. 
Frond gelatinous, lubricous, cylindrical-compressed, irregularly dicho- 
tomous, subf astigiate ; ramuli regular, lateral; segments erect, slightly 
narrower; proliferous ramuli attenuated, many issuing subdistichously 
from near the margin of the compressed rachis. 
South Australia ' (Encounter Bay), Victoria, Tasmania. 
Fig. 195 . — Nemastoma Feredayae . 
N emas'toma palmata Harvey. 
Attachment a small, scutate disc. Frond 10 cm. to 15 cm. long, mem- 
branous, thickish, irregularly palmatifid, subdichotomous ; laciniae 
lanceolate-linear, subarcuate, spreading; medullary tissue very lax. 
Colour when dry- a dull purplish-red. The substance, though very soft, 
vhen fresh is membranous, and even papery when dry. Adheres imper- 
fectly to paper. 
Tasmania. 
