CARNEGIE INSTITUTION OF WASHINGTON. 



WATERLILIES, PLATE 18. 



NYMPH/EA RUBRA. 



1-1, Vertical sections of flowers in different phases of inflorescence. 5, Sepals. 6-7 Petals. S-10. Outer median s 

 from front and back. 11. 12, 15, 16. 17. 18, 19, 20, aspects of mature pollen. 13. 14. 21, i<li 



verse section of style. 23-26, Hairs on ovary. 27, Stigma spread out and seen from above. >, Ovai i try styles *.< 



the side. 29, Ovarv and stamens. 



