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 14- 



29. Postical base of leaf, X 28. 



30. Cells from apex of leaf, X 270. 



31. Cells from middle of leaf, X 270. 



32. Teeth and cells from postical base of leaf, X 270. 



33. Part of sterile stem, postical view, X 14- 



34. $ bract with antheridia, X 14- 



35. Cells from middle of leaf, X 270. 



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). 



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