Plate III. 



Figs. 1 — 3. CoraUina decufisato-dichoto'ma. 



1. A portion of a branch attacked by Choreonema Thiireti, ScJnn., with its 



conceptacles frosted on the branches, x Ca. 10. 



2. A portioi] of a branch without parasite, x Ca. 10. 



8. Longitudinal section of a branch through a geniculum ; the zonal 

 arrangement of the periclinal cells is not clear in this species ; a, 

 portions of the penetrated frond of the parasite stained in the same 

 degree as the genicular cells. Zeiss 2 X DD. 



Fig. 4. Gorallina adhœrens, Lamx. 

 A portion of branch. xCa. 10. 



Fig. 5. CoraUina arhorescens. 

 A portion of branch, x Ca. 10. 



Fig. (). Gorallina radiata. 

 A portion of branch, x Ca. 10. 



Figs. 7 — 8, CoraUina ungalata. 



7. A portion of a sterile branch, the characteristic articuli are shown at the 



upper portions, x Ca. 10. 



8. A fertile branch, with conceptacles at the terminal and the diverging 



points. X Ca. 10. 



Fig. \). CoraUina itngulata,/. hrevior. 

 A portion of branch, x Ca. 10. 



Fig. 10. CoraUina up. 

 The fertile frond, without any sterile branch, x Ca. 10. 



Figs. 11 — ll3. CoraUina officinalis, L. 



11. A portion of the branch of a. X ('a. 4. 



12. do. of /5. xCa. 4. 

 18. do. of y. X Ca. 4. 



