PLATE I. 
Laminaria japonica Aresch. 
Fig. 1. Habit of a typical plant from Osatsube, Prov. Oshima. x 
Fig. 2. Cross section through the upper part of the stipe, x 1.6. 
Fig. 3. Cross section through the lower part of the stipe, x 1.6. 
Fig. 4. Cross section of the blade, x 0.4. 
