366 61 . Sphaeroc. 2.THALASSIOPHYT^E. Pl.cell.aph. 
y. granatinus. Thallus roundish; segments widen up- 
wards mostly simple, lobed at the end. 
^.fimbriatus. Segments linear, proliferous at the edge. 
e. elegans. Thallus roundish; segments widening up- 
wards; tip repeatedly divided, sinuated. 
£. uncinatus. Segments linear; tip forked, hooked and 
cartilaginous. 
y. ligulatus . Segments widening upwards ; tip palmate; 
lobes simple, oblong, lanceolate. 
0. multifidus . Segments linear, repeatedly divided; ex- 
treme lobes very numerous, narrow, long, branched. 
1. incrassatus . Segments linear, flattish ; tip forked ; lobes 
linear, lanceolate, spreading, acute. 
c. Thallus ribless , leat her like ; edge proliferous ; tubercles 
flat , on the surface, 
5. Sphcerococcus Sarniensis. Guernsey roundfruit. 
Thallus membranaceous, cartilaginous, nerveless, pal- 
mately divided; edge proliferous; segments linear; tu- 
bercles immersed. 
Fucus Sarniensis, I'urn. Hist. 95; Engl. Bot. 2132. 
Sphaerococcus Sarniensis, Agardh Syn. 16. 
Sea-shores. 
Thallus purplish red, becoming brown when dry. 
6. Sphcerococcus reniformis. Kidney shape roundfruit . 
Thallus membranaceous, cartilaginous ; branches thread- 
like; segments dilated, kidneyshape or orbicular ; tubercles 
hemispherical, immersed. 
Fucus reniformis, Turn. Hist . 109 ; Engl. Bot. 21 16. 
Sphaerococcus reniformis, Agardh Disp. 16. 
Sea-coast. 
Thallus thin at the base, compressed, irregularly divided ; 
segments suddenly expanding, thin. 
£. tenuis. Thallus slightly expanded at bottom, edge ir- 
regularly ciliated. 
d. Thallus ribless, leather like, forked ; tubercles on the 
surface , flat. 
