i y& [ 1203 ]
F U C U S clavellosus.
Stone-crop Fucus.
CRYP TOG AMI A 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 thread-shaped, tender, repeatedly
branched; branches mostly alternate, somewhat two-
ranked: the ultimate ones even, rather tumid, blunt.
Tubercles lateral, inversely urn-shaped.
S y n . Fucus clavellosus. Tarn. Tr. o f Linn. Soc. v. 6.
133. t. 9. Syn. 373.
F o r the knowledge of this Fucus, as well as for the specimen
figured in our plate, we are obliged to Mr. Turner, who has
found it on the beach at Brancaster and Yarmouth, Norfolk,
bearing its fruit in July and August, being undoubtedly but of
annual duration. Sir T. Frankland has often observed it at
Scarborough.
It is next allied to F. kaliformis, v. Q. t. 040, but has never
like that species any jointed appearance, nor, according to Mr.
Turner, any disposition to be whorled, neither are the tubercles
globular, but inversely urn- or top-shaped, larger, and growing
more sparingly, than in the kaliformis. We find them often
axillary, but not universally so. The whole size of the plant is
smaller than in kaliformis. Its colour is a fine pale pink. The
frond is much and repeatedly branched, generally in an alternate
manner; the little ultimate branches somewhat club-
shaped and obtuse. A little cluster of dark-red seeds is observable
in the centre of each tubercle, which, when the tubercle
disperses them, are found scattered over the branch, an
usual circumstance in this tribe.