98 
CRYPTOGAMIA. ALGA2. Focus. 
iu general thicker than those of F.fastigiatiis and F.furcdlatus , and are 
in ore regularly forked than any I have met with, the F. lor eus excepted. It 
differs from the other forked Fuci in invariably maintaining an oval 1 mode 
of growth instead of an angular one at the forks, and also in the rounded 
blunt termination of the branches. At the latter end of summer, on ex¬ 
amining the forked tops of the plant, several of them appeared replete 
with opake substances. On making a longitudinal incision into these, I 
clearly discovered by the help of a moderate magnifier, the form and 
di rection of these vessels which proceeded from a point, or kind of punc-. 
ture in the inner side of the membrane. They evidently grew in a conical 
shape, and resembled a Peziza. The tops of these Peziza-form vessels 
were regularly dilated and somewhat prominent, covered with small dark 
globular grains. Differs from F. fastigiatus and F.furcdlatus, in being 
less branched than either of them, but particularly in the forked extremi¬ 
ties of the latter constantly originating in acute angles. It differs also 
from F. rotundas of Grrielin; for besides the forks being acute in F. 
rotandusj the fructifications grow in excrescences on various parts of the 
stem; and for this last reason, among others, it cannot be F. angulaius 
of that author. Mr. Hudson has named this plant the F. tubercidatus , 
but as several other Fuci put on tuhcrcidated appearances in matu¬ 
rity, 1 have, in conformity to its character and mode of growth, 
called it F. bifurcatus. Major Velley. Stem single, long ; twice or thrice 
forked near the top. Whole plant cylindrical, semi-transparent. Fruc¬ 
tifications perfectly transparent and beautiful; consisting of red brown 
orbicular masses. The ends of the plant were tubercled, and on cutting 
off a slice the reticulated jelly and the masses of pear-shaped seeds were 
very visible. Its fruit is ripe in November. Mr. Stackhouse. (Mr. 
Turner remarks, in Linn. Trans, v. 3. p. 199. that about Ilfracombe in the 
north of Devon this species attains a much greater height than at Port¬ 
land Island, and the divisions of the frond are very numerous. E.) 
(Cylindrical Bifurcate Fucus. E.) F. tubercidatus. Huds. E. Bot. 
and Turn. Hist. F. Kali geniculato similis, non tamcn geniculatus. 
Bay. Syn. 43.13. F. tubercidatus. Lightf. 926. is F. purpurascens. 
On rocks and stones in the sea, near St. Ives, Cornwall. Acton- 
Castle, Cornwall, in pools left by the tide, plentiful. Mr. Stackhouse. 
(Portland Island. Turner. E.) P. June—QcC 
(F. coRQNOPiFoTiius. Frondcartilaginous, between flat and compressed; 
nerveless, much and irregularly branched, beset towards the 
apices with distichous, patent, nearly cylindrical ramuli, placed 
in alternate parcels; capsules spherical, mucronulated, sup¬ 
ported on very short distichous, horizontal peduncles. 
Turn. hist. 122— Stackh.p. 82. t. 14. 
From nine to eighteen inches long. Colour scarlet, pink, or sorrel, soon 
changing. This Fucus has been long confounded with F. cartilagincus, 
till Dr. Goodenough and Mr. Woodward published their excellent paper 
in the Linn. Trans, and justly claimed for it the rank of a distinct species. 
F. carti/agineus especially differs in its regularly bipimiated branches, and 
sub-pyramidal outline. 
Much-branched Pedunculated Fucus. Isle of Wight, Dorsetshire, 
Deton, and Cornwall, not uncommon. Near Belfast. Mr. Temple¬ 
ton. Bantry Bay, abundant. Miss Hutchins. 
P. Aug—Nov. Turn. Hist. E.) 
F. rotun'hus. Cylindrical, forked; angles of the forks acute: fructi¬ 
fications wart-like, on the stem and branches. 
