340 KJELLMAN, THE ALGiE OF THE ARCTIC SEA. 



PLATE 22. 

 Alaria oblonga. 



Fig. 1. Very youiig specimen. '/,. 



» 2. Olcler specimen, not vet beaving- sporopliyll. '/,. 



" t!/. 01(1 specimen witii sporophylls beariiig zoosporangia. '/,. 



» 4. Sporophyll with sorus developed. Vi- 



PLATE 23. 

 Alaria elliptica, 



Fi(j. 1 — 2. Speciiuens at diffei-eut ages. 



PLATE 24. 

 Phyllaria lorea. 



Fig. 1. Young specimen. Vi- 

 » 2. Somewhat older specimen. Vi- 

 » 3. Pull-growa specimen with sorus in development. Vs- 



PLATE 25. 

 Phyllaria dermatodea. Fig. 1—4. 



Fig. 1. Transverse section of the stipe of a young specimen with a ring of thick-walled, tubular cells on the 

 limit between the middlc and intevmediate layers. ^/j. 

 " 2. Part of the same transverse section: itn the thick-walled, tubular cells, """/i- 

 « 3,4. Parts of two such cells. ■''%. 



Phyllaria lorea. Fig. 5—6. 



Fig. 5. Inner part of a transverse section of the stipe of an older specimen, with long, tubular, but thiu- 

 walled cells (m). -»%. 

 « 6. Transverse section of the lamina with a cryptostoma. '"%• 



Laminaria saecharina f. grandifolia, Fig. 7. 



Fig. 7. Part of a transverse section of the lamina with laenna mucifera (1) '""/r 



Laminaria nigripes. Fig. 8—10. 



Fig. H. Outer part of a transverse section through the stipe with lacunii; mucifene. ^"/j. 

 The specimen is from Spitzbergeu, determined as L. nigripes by J. G. Agaruh. 



