CARNEGIE INSTITUTION OF WASHINGTON. 



WATERLILIES, PLATE 20. 



NYMPH/EA RUDGEANA. 



1, 2, Views of the flower. 3, 4,- Fruits. 5, Bud. 6, Same as 5, with outer floral organs removed. 7-10, Petals. 11-15. stamens. 

 16-19, Views and details of gymtcimn. 20-22. Pollen. 23, Fruit. 24, Cross section of ovary. 25-27. Sections of Vertical 



section of stigma, showing iiaitilhu- 



