ALG 117 
along our own coasts are to be found on the rocky shores of 
the North Atlantic and the North Pacific, the display on 
the latter coast being especially rich in forms. They are 
all anchored plants, the strong holdfasts and leathery bodies 
enabling them to live exposed to strong waves and cur- 
rents. 
The largest forms are the kelps (Laminarias), the general 
habit of body being a stem fastened to the rocks by a cluster 
Fie. 107.—A common kelp, showing root- 
like holdfast, stalk, and blade.—After 
SAUNDERS. 
of strong, root-like holdfasts, and ending in a blade-like 
expansion (Fig. 107). The giant kelps of the Pacific Coast 
are the most notable forms. One of these has a stem about 
Fra. 108.—A kelp with very long and rope- 
like stem bearing numerous leaves.— 
After Bennerr and Murray. 
as large as a clothes-line, reported as sometimes reaching a 
length of 900 feet, and bearing numerous leaves (Fig. 108). 
The bladder kelp has a very long flexible stem (120 to 150 
