PLATE IX. 
Laminaria angustata Kjellm. 
Fig. 1. Habit of a fertile plant from Shiraoi, Prov. Iburi. 
Fig. 2. Basal part of a fertile plant, x 0.4. 
Fig. 3. Cross section through the lower part of the stipe. 
Fig. 4. Cross section of the blade, x 0.8. 
x 0.16. 
x 1.6. 
