366 61.Spheroc. 2. THALASSIOPHY T'S. Pi, cell.aph. 
y. granatinus. Thallus roundish; segments widen up- . 
wards mostly simple, lobed at the end. . ; 
0. fimbriatus. Segments linear, proliferous at the edge. 
«. elegans. Thallus roundish; segments widening up- 
wards; dip repeatedly divided, sinuated. 
£. uncinatus. Segments linear; ézp forked, hooked and 
cartilaginous. 
y. ligulatus. Segments widening upwards; 7p palmate; 
lobes simple, oblong, lanceolate. 
. mullifidus. Segments linear, repeatedly divided; ex- 
treme lobes very numerous, narrow, long, branched. 
t. incrassatus. Segments linear, flattish ; 7p forked ; loles 
linear, lanceolate, spreading, acute. 
c. Thallus ribless, leatherlike ; edge proliferous ; tubercles 
flat, on the surface. 
5. Spherococcus Sarniensis. - Guernsey roundfruit. 
Thallus membranaceous, cartilaginous, nerveless, pal- 
mately divided; edge proliferous; segments linear; du- 
bercles immersed. 
Fucus Sarniensis, Turn. Hist. 95; Engl. Bot. 2132. 
Sphzroceccus Sarniensis, 4gardh Syn. 16. 
Sea-shores. 
Thallus purplish red, becoming brown when dry. 
6. Spherococcus reniformis. Kidneyshape roundfruit. 
Thallus membranaceous, cartilaginous; branches thread- 
like; segments dilated, kidneyshape or orbicular; tulercles 
hemispherical, immersed. 
Fucus reniformis, Zurn. Hist. 109; Engl. Bot. 2116. 
Spherococcus reniformis, 4gardh Disp, 16. 
Sea-coast. 
Thallus thin at the base, compressed, irregularly divided ; : 
segments suddenly expanding, thin. 
B. tenuis. \Thallus slightly expanded at bottom, edge ir- 
regularly ciliated. , 
d. Thallus ribless, leatherlike, forked ; tubercles on the 
surface, flat. “ 
