340 KJELLMAN, THE ALGH OF THE ARCTIC SEA. 
PLATE 22. 
Alaria oblonga. 
7 Tonne . / 
Fig. 1. Very young specimen. 1/). 
yi 
» 2. Older specimen, not yet bearing sporophyll. /j. 
» & Old specimen with sporophylls bearing zoosporangia. 1/,. 
» 4. Sporophyll with sorus developed. 1/j. 
PLATE 23. 
Alaria elliptica. 
Fig. 1—2, Specimens at different ages. 
PLATE 24. 
Phyllaria lorea. 
Fig. 1. Young specimen. 1/,. 
» 2. Somewhat older specimen. 1/,. 
» 3. Full-grow imen with sorus in devel t. U 
3. grown specimen with sorus in development. 1/3. 
PLA "25: 
Phyllaria dermatodea. Fig. 1-—4. 
Fig. /. Transverse section of the stipe of a young specimen with a ring of thick-walled, tubular cells on the 
limit between the middle and intermediate layers. %/). 
» 2. Part of the same transverse section: im the thick-walled, tubular cells. 7°°/,. 
« 3,4. Parts of two such cells. °°/,. 
Phyllaria lorea. Ig. 5—6. 
Inner part of a transverse section of the stipe of an older specimen, with long, tubular, but thin- 
walled cells (m).  ?°/,. 
» 6. Transverse section of the lamina with a cryptostoma. 
Fig. § 4 
100 / 
ile 
Laminaria saccharina f. grandifolia. Ii. 7. 
Fiy. 7. Part of a transverse section of the lamina with lacuna mucifera (1) 1°/). 
Laminaria nigripes. Ig. 8—10. 
30 / 
ale 
Fig. &. Outer part of a transverse section through the stipe with lacune mucifere. 
The specimen is from Spitzbergen, determined as L. nigripes by J. G. AGARDH. 
