188 
THE SEAWEEDS 
Gracilaria confervoides (L.) Greville. 
Fronds elongate, like fine twine, flabelliform ; branches elongate, sub- 
undivided. Cystocarps numerous on the branches, hemispherical. Tetra- 
sporangia numerous in a thickened filiform branch. Height to one meter. 
Colour purplish. 
Widely distributed in the Atlantic, West Indies, Cape of Good Hope, the 
Philippines, and in Australia and Tasmania. In South Australia, collected 
from Encounter Bay. 
B. — The inner medullary cells fairly large, decreasing in size gradually 
outwards. The cortical cellules disposed in several series. 
Fig. 56 . — Gracilaria confervoides : a, habit of a plant; b 
and c, transverse and longitudinal sections of 
thallus; d, section through cystocarp; e, 
sporangia. (After Taylor and Tilden.) 
