FUCUS viridis.
Green Husky Fucus.
Z 5
CRYPTOGAMIA Algce.
Gen. Char. Seeds produced in clustered tubercles,
which burst at their summits.
Spec. Char.- Frond pinnate, repeatedly compound,
thread-shaped. General and partial branches all
opposite, crow'ded, capillary, acute.
Syn. Fucus viridis. FI. Dan. t. 886. Turn. Syn. 397.
W e have, at various times, been favoured with specimens
of this rare Fucus from Yarmouth, by Mr. Turner and the
Rev. G. R. Leathes. Sir T. Frankland has found it growing
at Scarborough, from whence perhaps the plants occasionally
cast up on the Norfolk coast may have been washed by the
tides. This, according to Mr. Turner, happens in July and
August, and it confirms his idea of its being an annual
species.
Root a small callous knob. Frond 1 or 2 feet long, cylindrical,
as thick as a small packthread, 3, 4 or 5 times compounded
in an opposite pinnate manner] the branches all
round, tapering, and the ultimate ones very fine. The fructification
has not been detected. The colour is a fine tawny
orange, which after a few minutes’ exposure to the air turns
to a pale verdigrise green. This is analogous to that of F. ligu-
latus, J. 1636, of which the original' colour is, it seems, a
bright orange, the green hue being assumed after it comes out
of the water. Both species -turn brownish by long keeping
in fresh water.
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