CRYPTOGAMIA. ALGZ:: Fucus. E. (1) Flat, ribless, 95 
: OPAKE, 
Grows to a great length, and is more regularly forked than 
any plant I know, It grows fixed to the rocks by a most tena- 
cious gluten. Major Vettey. A short stem supports a kind of 
cup full  aninch diameter. Out of this arise one or two strap. 
' shaped leaves, several feet in length, nearly as broad as a straw, 
dividing into forks at distant intervals. The whole plant is 
opake, ribless, dark coloured, and in every part beset with tu- 
bercles filled with a slimy fluid, and open at the top. A pencil 
of hairs issues from some of them, but the fluid they pour out 
contains nothing like seeds ; the others without hairs pour out 
a mucilage filled with seeds of an oblong shape, but so small as 
to elude the naked eye. This a tus of fructification seems 
nearly the same as that in the F. serratus, except that in this 
plant the male and female organs are indiscriminately dispersed 
over the whole plant, whilst in that the male flowers are on the 
lower, the female on the upper part of the branches. Dr. Bor- 
lase, in his Nat, hist. of Cornwall, tells us that he measured a 
plant 22 feet long. ' 
Sea Thongs. Rocks and stones in the sea. Mount’s-bay, 
Cornwall. ; P. June—Sept, 
F, Without a mid-nb ; simple ; sword-shaped ; stalk cy-sacchari/nus. 
lindrical ; very short. 3 = 
~ Gunn. ii. 7. 2-FI, dan. 416—Gmel. 7 and 28. 
Oval or oblong, leathery, often 4 feet long and 2 broad, 
waved, narrow at the base, adhering to stones as if by means of 
fingers. Linn. suec. 2. 1151.—Stem from 2 to 12 inches high, 
ad single, tapering at each end, flat, sometimes 2 yards long, 
puckered, the wrinkles containing a jelly like mucus, in w ih 
the fructiferous granules are lodged. Gmewty fuc. 195. Frac- 
tification, thin inflated pellicles like those of F. digitatus con- 
taining a network of tubes in a thin mucus, and similar tubes 
are found in the stiff pellucid jelly between the skins. I never 
observed the seeds exposed in the marginal sinusses as mentioned 
by Gmelin. Seeds not yet observed. Mr. Sracxnousz. 
Rocks and stones in the sea. P. Jan.—Dec. 
Washed in spring water and then hung up in a warm place, 
a substance like sugar exudes from it. Some people eat it fresh 
out of the sea. Smaller leaves and clusters eaten by the poor as 
F. Palmatus. Rutry. 
F. Hand-shaped, without a mid-rib: segments sword- polyschi’des 
py a root tuberous, hollow: stalk flat, plaited 
at the edge. 
Stackh. 4—Gmel. 30. 
, Root large. Stem flat, spirally twisted, more than a foot 
high, its top expanding re eclid leaf which is divided 
