J â b [ 2169 ]
FUCU S granulatus.
Granulated Fucus.
CRYPTOG'AMIA Algce.
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 round, warty, very much branched:
branches threadshaped, spinous; young ones linear,
flat, entire, with a midrib. Tubercles crowded near
the extremities, necklace-like, with a toothed point.
SyjJ. Fucus granulatus. Linn. Sp. PI. 1629.
F. mucronatus. Turn. Syn. 7 3 .
F. nodicaulis. With. v. 4 . 111. Hull. 3 2 9 .
SENT from the Devonshire coast by Mrs. Griffiths to Mr.
Turner, who considers it as an excellent specimen of his mucronatus,
under which he candidly admits the probability of
his having confounded several different species. This is undoubtedly
the granulatus described in Sp. PI. and we presume
to think that the j'cenicitlaceus of Linn. Trans, v. 3. 134, on
the authority of a specimen marked by Mr. Woodward, is a
different plant, whatever Hudson’s concalenatus may be, but
it also seems to us very distinct from granulatus. '
These species all nearly agree in their dark olive-brown colour,
almost black in the dried specimen. The present has a
firm expanded disk for its root, and the main stalk when old
becomes warty, or knotty, in a.very remarkable manner. The
young branches are flat, linear, entire, with a midrib ; the
older ones extremely various in length, and in quantity of subdivisions,
but all threadshaped, beset with little, sharp, scattered
spines, and bearing near their extremities necklace-like
oblong clusters of innate roundish tubercles, each opening by
a pore, and lined internally with seeds.
F. granulatus, Tr. o f L. Soc. v. 3. 131, is evidently by the
description npt this plant. See t. 2 1 70 .