PLATE IV. 
Fig. 1. 
Fig. 2. 
Fig. 3. 
Laminaria diabolica n. sp. 
Habit of a plant from Kiritappu, Prov. Kushiro. x 0.1. 
Cross section through the upper part of the stipe, x 1.6. 
Cross section through the lower part of the stipe, x 1.6. 
