JL*) / [ 2 18 3 ]
P U C U S Bursa.
P ou ch F u cu s.
CRYPTOGAMIA Alga.
G e n . C h a r . Seeds produced in clustered tubercles,
which burst at their summits.
Spec. Char, Frond green, globose, hollow, minutely
papillary, composed of club-shaped concentric vesicles,
connected by capillary, tubular, branching,
entangled filaments.
Syn. Fucus Bursa. Turn. Hist. Fucor. v. 3. 6. i. 1 3 6 .
Alcyonium Bursa. Linn. Syst. Nat. v. 5. 1 2 9 5 .
Lamarckia Bursa. Olivi in Zoolog. Adriat. 2 5 8 .
T h i s strange production appears from Mr. Turner’s work
to have been observed on several parts of the English sea coast.
Our specimens were gathered in the Irish seas by Mr. Templeton
near Belfast, and their fibrous roots were attached to fragments
of shells. Each plant is a hollow spongy ball, from
I to 10 inches in diameter, green, composed of entangled
pellucid jointed fibres, bearing numerous Concentric oblong
Vesicles, whose obtuse summits reaching to the outside of the
ball, give it a papillary or velvety appearance. Olivi says the
seeds are in masses between the vesicles. He makes a new
genus of this plant, adding another, the Ulva decorticata of
Mr. Woodward, Tr. o f Linn. Soc. v. 3. 55. Mr. Turner
shows its affinity to F. iomentosus, t. 712, and therefore, for
the present at least, reckons it among Fuel. In mode of
growth it closely resembles Conferva cegagropila, t, 1377.
21B3.
J u q j (610/té ù x i/tfd /A/jtif'Jewe/SyJ/'/idM'.
—