/ f i
FUCUS tenuissimus.
Slender Tapering Fucus.
CRYPTOGAMIA Alga.
G e n . C h a r . Seeds produced in clustered tubercles,
which burst at their summits.
S p e c . C h a r . Frond thread-shaped, much branched,
pale flesh-coloured. Branches and leaves tapering
at each end. Tubercles ovate-oblong, sessile on
the leaves.
S y n . F ucus tenuissimus. Gooden, and Woodw. Tr.
o f Linn. Soc. v. 3. 215. t. 19. Turn. Syn. 35.
With. v. 4 . 117- Hull. 326.
Ulva capillaris. Huds. 5 7 1 .
O l JR drawing of this rare Fucus was made from Mr. Woodward’s
specimen under his inspection. It has been found
only on the south coast of England, as at Weymouth, Portland,
and in Cornwall, and is presumed to be annual, bearing
fruit in the summer.
It grows parasitically on other larger Fuel, and is throughout
of a pale flesh-colour, very tender and delicate. Fronds
numerous, from 6 to 10 inches long, much and alternately
branched, the branches compound, all tapering at both ends,
by which this species is known from F. dasyphyllus, t. 847,
and oltusus, t. 12 0 1 . The tubercles grow sessile on the sides
of the ultimate branches or leaves, and are of a deeper red
colour. In an advanced state Mr. Turner describes the seeds
as adhering to the surface of the ieaf.