tichous and vertical, an inch or an inch and a half long, somewhat flabelli- 

 form in outline, dichotomous, divided to the base into many, almost fili- 

 form, repeatedly forked, nerveless, acute segments. In the young root- 

 leaves alone is there any appearance of a midrib. The glamh vary in 

 number in specimens of different ages. The vesicles are spherical, of a 

 golden yellow, borne on slender petioles, one above the axil of each leaf; 

 the largest are B lines, the smaller 2-3 lines in diameter, and tipped when 

 young with a minute setaceous point. Receptacles in a branching raceme 

 or panicle, on forked pedicels; each receptacle 2-4 lines long, scarcely 

 thicker than bristle, smooth, constricted, and somewhat moniliform, con- 

 taining a single row of scaphidia. The colour of stem and leaves is a 

 bright brownish-olive ; that of the vesicles yellow. The substance is coria- 

 ceous. 



This handsome plant is abundant in Tasmania, and is par- 

 ticularly striking whilst growing, by the profusion of bright- 

 yellow, globose air-vessels, scattered like golden apples over the 

 branches. The multifid leaves are unlike those of other Aus- 

 tralian species, except S. varians, which differs in the broader, 

 nerved, more pinnatifid and not fastigiate leaves, and in general 

 aspect. 



Fertile specimens of S. Raoulii are either very rare or con- 

 lined to deep water. Where it grows at Georgetown it is 

 quite barren. 



Fig.l. Sargassum Raoulii, small portion of a branch, with ramuli, leaves, 

 and vesicles. 2. Base of stem and branches : — both of the natural size, 

 3. Eeceptacles and part of a leaf,' — enlarged. 



