PLATE XXIII. 
Fig. 1 
Fig. 2 
Fig. 3. 
Fig. 4. 
Fig. 5. 
Fig. 6. 
Alaria yezoensis n. sp. 
Habit of a plant from Kushiro, Prov. Kushiro. x 
Lower part of a frond, x 0.26. 
Cross section through the upper part of the stipe. 
Cross section through the lower part of the stipe. 
A mature sporophyll. x 0.8. 
Cross section through the midrib of the blade, x 
0.26. 
x 1.6. 
x 1.6. 
1.6. 
