220 



[Vol. 9, 1922] 



GARDEN 



Explanation of Plate 



Fig. 5. 



Fig. 

 Fig. 



6. 



7. 



Fig. 8. 



PLATE 13 



Isoetes cubana Engclm. Megaspores 

 /. adspersa A. Br. Megaspores. 

 J. Bort/dtta Bur. Megaspores. 

 /. tenuissima Boreau. Megaspores. 









