£-/ S [ I054 ]
F U C U S mammillofus.
Mammillary Fucus.
CRYPTOGAM1A Alga.
G en . Char. Seeds produced in cluttered tubercles,
which burft at their fummits.
S p e c . C h a r . Frond cartilaginous, forked, dilated
upwards, tharp-pointed, clothed on both tides with
numerous mammillary fruit-bearing tubercles.
S y n . F ucus mammillofus. Gooden, and Woodw. in
Tr. of Linn. Soc. v. 3» 174* Hull. 323.
F. canaliculatus (3. Hudf. 583.
F. ceranoides. With. 99. Lightf. 916, s.
F . parvus, cauliculis teretibus, fummitatibus mem-
branaceis dilatatis et laceratis. Rati Syn. 44.
F rEQUENT on the coaft. We received it from Yarmouth
with the laft. No fpecies has been lefs underftood, and yet,
as we conceive, none is more certain. Morifon’s expreflive
figure, SeB. 15. t. 8. f . 13, having been moft unaccountably
referred by Linnaeus, with fome commendation, to his F. ceranoides,
though fcarcely any other 2 Fuci are more different,
caufed this and the true Linnaean crifpus ( of Which it was fup-
pofed a variety) to be univerfally taken for ceranoides. Mr.
Hudfon in his 2d edition has removed our mammillofus to the
canaliculatus, a fpecies totally diftinCt from it in colour,
habit, and moft efpecially in fructification, fee our v. 12. t. 823.
---- The Fucus before us can be confounded with no other,
if attention be paid to the Angular mammillary tubercles which
cover both fides of its uppermoft ramifications, each of which
contains a clufter of dark-red feeds. In habit and colour,
varying from red, or pale purple, to a pale greenifh brown, it
agrees with crifpus,- but is more channelled, and generally
fharper pointed. It is fometimes found much narrower than
is here reprefented.