CRYPTOGAM! A. ALGiE. Fucus. 
85 
lower, the female on the upper part of the branches. Dr. Borlase, in his 
Nat. Hist, of Cornwall, tells us that he measured a plant twenty-two feet 
long. 
Sea Thong. Rocks and stones in the sea. Mount’s-bay, Cornwall. 
P. June—Sept. 
F. sacchari'nus. Without a mid-rib ; simple; sword-shaped ; stalk 
cylindrical; very short. 
( Turn. Hist.163-E.Bot. 1376. E.)— Gunn. ii. 7. 2— FI. Dan. 41 6-GmeI. 
27 and' 28. 
Oval or oblong, leathery, often four feet long and two broad, waved, 
narrow at the base, adhering to stones as if by means of fingers. Linn. 
Suec. n. 1151. Stem from two to twelve inches high. Leaf single, taper¬ 
ing at each end, flat, sometimes two yards long, puckered, the wrinkles 
containing a jelly-like mucus, in which the fructiferous granules are 
lodged. Gmelin. Fuc. 195. Fructifications, thin inflated pellicles like those 
of F. digitatus containing 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 sinuses as mentioned by 
Gmelin. Seeds not yet observed. Mr. Stackhouse. 
(F. phyllitis is supposed by several able naturalists, to be only the young 
state of this species. 
Sweet Fucus. Sea Belt. Laminaria saccharina. Agard. Hook. E.) 
Rocks and stones in the sea. P. Jan.—Dec.* 
F. polyschi'des. Hand-shaped, without a mid-rib: segments sword¬ 
shaped : root tuberous, hollow: stalk flat, plaited at the edge. 
{Turn, Hist. 161. E.)—Stackh. 4— Gmel. 30—( E . Bot. 1760. E.) 
Boot] arge. Stem flat, spirally twisted, more than a foot high, its top ex¬ 
panding into a roundish leaf which is divided into several very long seg¬ 
ments, broad at the base, tapering to a point, sometimes forked without 
a mid-rib. The substance of the plant is cartilaginous; it is sometimes 
fifteen feet in extent; its colour greenish, changing to olive or to yel¬ 
lowish. Gmelin. Fuc. 203. 
From a large hollow bulb arises generally one, sometimes two, or even 
three compressed stalks, four inches or more wide, thick in the middle, 
thinner at the edges; where it is strangely furbelowed, and contorted. 
This stem, which is upwards of two feet long, suddenly expands into a 
very wide head, which divides into sword-shaped segments. Its sub¬ 
stance is leather-like, totally free from veins or fibres; colour deep brown, 
and appearing as if varnished. The bulb sends out numerous strong 
horny roots which strike deep into the ooze, or lay hold of the stones in 
the larger crevices of the rocks. Stackhouse Ner. Brit. The roots are 
conical, serpentine, and well represented in the figure of Mr. Stackhouse. 
Great masses of these roots are frequently thrown upon the shore, and 
Mr. Stackhouse informs me that the plant sometimes weighs twenty or 
thirty pounds, or more. The fructification consists of many dots or 
globules dispersed through the whole of the foliage, within its substance. 
* 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 are eaten by the poor as F. palmatus. Rutty. (Thunberg states that in Japan 
it is rendered completely esculent. Cattle feed and get fat upon this plant, but it is 
apt to disflavour the flesh. E.) 
