PLATE XLIII. 



[Proc. Wash. Acad. Sci., Vol. II, PI. XVIII.] 

 Diplophylleia plicata (continued) . 



FIG. 28. Part of sterile stem, antical view, some of the upper leaves gemmi- 

 parous, X H- 



29. Postical base of leaf, X 2 . 



30. Cells from apex of leaf, X 2 7- 



31. Cells from middle of leaf, X 270. 



32. Teeth and cells from postical base of leaf, X 2 7- 



33. Part of sterile stem, postical view, X H- 



34. $ bract with antheridia, X H- 



35. Cells from middle of leaf, X 2 7- 



Figs. 28-32 are from specimens collected by Messrs. Brewer and Coe at Far- 

 ragut Bay (No. 619) ; and figs. 33-35, from specimens collected by Dr. Trelease 

 at Orca (No. 1492). 



(37 2 ) 



