Plate m. 



Fig.«. 1-G. Cyi^tophyUum ■'^isymhrioîdes J. Ag. 



1. Basai part of a wtill grown plant, 



2. A principal brandi et' a sterile frond, with one lateral branch. 



3. A portion of withered principal branch ; the apjiroximate lateral 

 branches have been worn away, leaving their pinnately disposed 

 basal parts only. 



4. A basal leaf at the basal part of a sterile lateral branch ; one 

 of the lacinifü transformed into vesicle. 



.'5. Same as above, with two transformed lacinife. 

 G. Upper portion (»f a iertile lateral branch. 

 Figs. 7-11. Cystophyllum Turneri (Kütz.) 



7. Axial stem moasnring about •20cni. in length, with the lateral 

 branches cut off near the insertion points, a, basal region; h, 

 a[)ical region. 



8. A leaf at the base of a lateral branch. 



9. Vesicles at the basal portions of ramulets. 



10. Two c(Misecntive vesicles in a ramulet. 



11. Middle portion of a lateral branch with fertile^ ramulets. 

 Figs. J 2-13. CystopIiyUnvi ca'.yritofsyim. 



12. a, h, c. U{)i)er, middle and lower portion res[)ectively of a branch 

 of 39 cm. length. 



13. a, b. Upper and middle portion respectively of a branch of 

 23 mi. leuu'th. 



