CRYPTOGAM! A. ALG^E. Focus. 
73 
D. (1) Flat; mid-ribbed; opake. 
(2) Flat; mid-ribbed; pellucid. 
E. (1) Flat; ribless; opake. 
(2) Flat; ribless; pellucid. 
F. (1) Cylindrical; opake. 
(2) Cylindrical; pellucid. 
G. (1) Capillary; opake. 
(2) Capillary; pellucid.* 
A. With Bladders. 
F. nodo'sus. Compressed: forked: leafits pointing two ways; very 
entire: air bladders in the substance of the leaf, solitary; dis¬ 
tended. 
{Turn. Hist. 91— E. Bot. 570. E.)— Stackh. 2. 10— FI. Dan. 14 G—Baster. 
11. :>—Dod. 480. l—Ger. Em. 1568. 6 — Park. 1293. 6, the left hand 
lower figure — Gmel. 1. B. 1— H. Ox. xv. 8. row 3. 2. 
Bladders egg-shaped, growing in the middle of the branches, broader than 
the branches. Leafits spear-shaped, blunt, from the edges of the leaf. 
Linn. Hard, leathery, six feet long, yellowish when fresh, blackish 
when dry. Stem variously branched, flat, but half an inch broad. 
Trailing, entire or winged, or alternately winged and forked towards the 
ends. Leaves simple, in pairs, several from the same fork of the branch, 
none towards the bottom of the stem. Leafstalks very short. The 
thicker leaves contain granulated fructifications in a mucous fluid. Air- 
vessels both on the stem and on the leaves, large, elliptical, hollow. 
Gmelin Fuc. 79. The inside of the fruit is perfectly analogous to that of 
F. vesiculosus. Mr. Stackhouse. The forked terminations of the air-blad¬ 
ders contain seeds and jointed fibres mixed with mucilage, but these 
cannot be observed without a microscope. 
(Knotty Fucus. E.) Rocks and stones in the sea. P. May.—Oct.f 
Var. 2. Stem serrated. Lightf. 920. 
Gmel. 1 B. 2. 
(F. mack Ah i. Coriaceous, cylindrical, filiform, dichotomous ; the 
apices blunt; vesicles scattered, innate, elliptical, solitary, wider 
than the frond. 
Turn. Hist. 52— E. Bot. 1927. 
From five to nine or twelve inches in length, slightly compressed, the size 
of a crow-quill near the base, narrowing upwards. Colour, olive-green. 
* There can be little doubt of the Fuei being the food of various kinds of fishes. They 
are indiscriminately used as manure by the farmers on the sea-coast. The stalk of the 
F. esculcntus may be eaten, as may also the F. saccharinus when boiled; but the more 
crisp and tender leaves of Fucus lanccolaius. holosetaccus , and pinnatijidus , are used as 
a salad. Fucus vesiculosus and serratus are collected on many of our northern shores, 
and burnt to make kelp. (In some parts of the Hebrides, the Scilly Islands and other 
barren districts of our coasts, the small black cattle, and also hogs, chiefly feed on 
sea-weed, which renders the meat poor, and frequently of a disagreeable flavour. The 
Scilly Islanders dispose of their kelp to the Bristol merchants, for the use of the glass 
manufacturers: considerable quantities are also imported from the coast of Galway. E.) 
t (This is preferred for the manufacture of kelp, and is therefore called Kelp- Wrack . 
Turn. E.)‘ 
