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S66 ei.Sphffiroc. 2.THALASSIOPHYT^. PLcell.apk.
y. granaiinus. Thallus roundish ; segments widen upwards
mostly simple, lobed at the end.
o'.Jimhriaius. Segments linear, proliferous at the edge.
£. eJegans. Thallus roundish; segments widening upwards;
tip repeatedly divided, sinuated.
^. uncinatus. Segments linear; tip forked, hooked and
cartilaginous.
r}. Ugulatus. Seg77ie?its widening upwards; tip palmate;
lobes simple, oblong, lanceolate.
fi. mullifidus. Segments linear, repeatedly divided; extreme
lobes very numerous, narrow, long, branched.
I. incrassatus. Segments linear, flattish ; tip forked ; lobes
linear, lanceolate, spreading, acute.
c. Thallus ribless, lealherlike ; edge proliferous } tubercles
flat, on the S7irja.ce.
5. SphcErococcus Sarniensis. Guernsey roundfruit.
Thallus membranaceous, cartilaginous, nerveless, palmately
divided; edge proliferous; segments linear; tubercles
immersed.
Fucus Sarniensis, Turn. Hist. 95; Engl. Bot. 2132.
Spiiaerococctis Sarniensis, uigardh Syn. 16.
xSea-shores.
Thallus purplish red, becoming brown when dry.
6. Sphcerococcus reniformis. Kidneyshape roundfruit.
Thallus membranaceous, cartilaginous; branches thread-
like; segments dilated, kidneyshape or orbicular; tubercles
hemispherical, immersed.
Fuciis reniformis. Turn. Hist. 109; Engl. Bot. 2116.
Sphserococcus reniformis, jigardh Disp, 16.
Sea-coast.
Thallus thin at the base, compressed, irregularly divided
segments suddenly expanding, thin.
B. tenuis. Thallus slightly expanded at bottom, edge irregularly
ciliated.
d. Thallus ribless, leatherlike, forked j tubercles on the
surfoce, flat.