356 
THE SEAWEEDS 
Cr omania Muelleri Harvey. 
Frond rigid, not gelatinous, pellucid, articulate, ecorticate, irregularly 
densely branched, the ramuli and ramelli attenuated, distantly verticillate ; 
secondary ramelli minute, bearing tetraspores, dichotomous, multifid, 
obtuse. 
Victoria (Western Port, Phillip Island). 
Grouania vestita Harvey. 
Frond 5 cm. to 15 cm. long, attenuated above, pyramidally branched, 
verticillately sub-branched, below subspongiose ; the ramelli of the verticils 
Fig. 177 . — Crouania vestita: a, plant; b, apex of a 
branch; c, transverse section, at a node; 
d, favellae (partly) surrounded by ramelli, 
some removed; e, a tetraspore on a por- 
tion of a ramellus. (After Harvey.) 
divergent, the inner ones subarcuate, curving from whorl to whorl, and 
covering every part of the frond, forming an intricate, ecorticate network, 
the outer ones free, rigid, conspicuously attenuated towards the apices; 
articulations cylindrical. Cystocarps globose, furnished with a large 
hyaline pericarp. Tetrasporangia spherical, triangularly divided. Colour 
dark red-brown, lighter towards apices. Substance soft, spongiose not very 
gelatinous. 
South Australia (Investigator Strait), West Australia (Rottnest 
Island, Fremantle, King George Sound). 
