I Vol. !•. 1022] 



3>V2 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation of Plati 



TLATi: 2:1 



Nymphaca "Mrs. <;. II. Pring," growing in tho ponds of the Missouri Botani- 

 cal Garden, St. Louis. Photograph taken August 1, 1922. 



