KONGL. SV. VET. AKADEMIENS HANDLTNGAR. BAND. 20. N:0 5. 337 



PLATE 13. 

 Halosaccion ramentaceum f. robusta. Fig. 1—2. 



Fig. 1. Specimen, the »ramenta» of which have been dissolved for the greatest part after the tetrasporangia 

 have ripened. Vi- 

 » 2. Part of specimen with new ramenta shooting forth from the remains of the formerly dissolved ones. Vi- 



Halosaccion ramentaceum f. subsimplex. Fig. 3. 



Fig. 3. Habit-figure, '/i- 



Halosaccion ramentaceum f. ramosa. Fig. 4. 



Fig. 4. Habit-figure, '/i- 



PLATE 14. 

 Sarcophyllis arctica. Fig. 1—3. 



Fig. 1. Older, full-grown specimen, '/j. 

 » 2. Transverse section of part of the frond, bearing procarps. '""'/i- 

 » 3. Transverse section of part of the frond, bearing sporocarps. '"/,. 



Kallymenia septemtrionalis. Fig. 4—6. 



Fig. 4. Young specimen. 7i- 

 » 5. Older, probably full-grown specimen. •/]. 

 » G. Transverse section of the frond in an older specimen, '^""/i- 



PLATE 15. 

 Ptilota pectinata f. integerrima. Fig. i. 



Fig. 1. Part of older, full-grown specimen. Vi- 



Ptilota pectinata f. litoralis. Fig. 2—5. 



Fig. 2. Habit-figure. Vi- 



» 3. Part of branch-system of the last order. ^*/j. 



» 4. Transverse section of a full-grown branch of the last order but one. ^*Vi* 



» 5. Transverse section of one of the oldest and most robust axes of the frond. '^Vr 



Ptilota pectinata f. typica. Fig. 6. 



Fig. 6. Transverse section of a full-grown branch of the last order but one. '^Vi' 



K. Vet. Akad. Handl. Bd. 20. N;o 6. 



43 



