118 
CRYPTOGAMIA. ALGdE. Conferva. 
C. fcenicula'cea. Threads very much branched; branches and sub¬ 
divisions of the branches very long, scattered. 
(Turn. Hist. % 34. E.)— Dill. 2. 8— Barr. 1123. 1. 
Threads irregularly divided like the leaves of fennel; soft and greenish 
when young, brownish and stiffer when old. Dill. (Frond subgelatinous, 
capillary, branched; branches growing irregularly in parcels on diffe¬ 
rent sides of the frond, rather remote, acuminated. Fructifications 
none yet discovered. Under the microscope the whole plant is seen 
to be beautifully reticulated. Turn. Hist. 
Fennel Conferva. Fucus suhtilis. Turner. E.) Isle of Man, on rocks 
covered by the tide. Dill. Cornwall. Huds. (Western coast of Scotland, 
and shores of Anglesea. E.) A. June—Oct. 
C. littoraTis. Threads soft, very much branched, proliferous, 
roughish : (joints cylindrical, short. Dillw. 
Dim. 31— E. Bot. 2290. E.)~Dill. 4. 19. 
F>rom four to twelve inches long, yellowish green, with very numerous, 
slender, hair-like divisions; very soft and tender, but not gelatinous. 
Dill. The figure of Dillenius is erroneous, as giving an idea of a prin¬ 
cipal stem and branches, which do not exist. Mr. Stackhouse. 
(Common Soft Conferva. Ceramiumlittorale. Agard. Hook. E.) C. pli- 
cata. Huds. Ed. 1. 484. Rocks and stones in the sea. Very common 
in pools left by the tide at low water. Mr. Stackhouse. Summer. 
C. tomento'sa. Threads very fine, very much branched: branches 
undivided, long, crowded, brown. 
(Dillw. 56. E.)— Dill. 3.13. 
Brownish red, especially when dry. Threads covered with a downy coat 
which it is difficult to remove ; but this and its colour readily distinguish 
it. Dill. Threads almost infinitely divisible. 
The figure of Dillenius does not express the habit of the plant, which is 
loose, straggling, and interwoven like a lock of wool. Mr. Stackhouse. 
(Agardh has observed long pods with seeds like those of C. siliculosum. 
Downy-coateb Conferva. Ceramium tomentosum. Agard. Hook. E.) 
Rocks, stones, and on Fuci. A. May—Oct. 
C. al/bida. Threads very fine, very much branched: branches undi¬ 
vided, fasciculated, whitish. 
(E. Bot. 2327. E.)—Dill. 3. 12. 
Threads nearly an inch long, whitish. Branches alternate. Little Branches 
fasciculated, simple, whitish, rising nearly to the same height. Huds. Pale 
green. Threads so fine as hardly to be discernible by the naked eye. 
Substance soft, both fresh, and also when dry, like cotton. Dill. 
(Whitish Cottony Conferva. Ditches, bogs, and pools. Island of 
Selsey, Sussex. Dill. Rivulet to the west of Marazion. Mr. Stack- 
house. A. Oct.—May. 
C. JERUGINO'SA. 
green. 
Threads branched, soft, shorter than a finger. 
Dill. 4. 20. 
very 
Colour an elegant cterulean green, which it retains when dry, so that this 
alone distinguishes it. Threads short, numerous, very fine, shining and 
silky when dry. Dill. 
