SEA-WEEDS

1. Chorda filum4. Delesseria (Maugeria) sanguinea
2. Fucus vesiculosus5. Rhodymenia palmata
3. Fucus canaliculatus6. Chondrus crispus
7. Ulva lactuca

Alaria esculenta is an edible species known as the Badderlocks in Scotland, and also locally as the Henware, Honeyware, and the Murlins. It has a fibrous root, and a stalked, lanceolate, entire frond with a distinct midrib throughout. The stem is winged with finger-like leaflets, in which the spores are arranged in oblong clusters.

Fig. 270.—Alaria esculenta

In the genus Chorda the frond is a simple, cylindrical tube, divided internally by numerous transverse membranes, and the spores are distributed over the surface. The commonest species is C. filum (see Plate VIII.), the frond of which is very slimy, and often from ten to twenty feet in length. In its young state it is covered with gelatinous hairs, but these are worn off as the plant develops. A smaller species (C. lomentaria) is sometimes found on our shores. Its fronds are constricted at intervals, taper at the tip, and grow in tufts. It is seldom more than a foot long, and is not of a slimy nature.

Fig. 271.—Sporochnus pedunculatus