The Floral Biology of Nymphaea Odorata Aiton




Chaney, Timothy Paul

Journal Title

Journal ISSN

Volume Title



The floral biology of Nymphaea odorata Aiton native to central Texas has been studied. Anthesis occurs over a three day period with flowers opening each morning. First day flowers are protogynous and the pollen-receptive stigmas secrete a fluid which fills the perigynous cup. Pollen covered insects, especially Hymenoptera (Lasioglossum versatum Robertson), are attracted to first day flowers by odor. As insects enter first day flowers, foraging for pollen, they land on the vertical but flexible stamens which bend and the insects fall into the stigmatic fluid. The stigmatic fluid washes pollen from the insects and crosspollination is achieved. Most insects escape from the stigmatic fluid. During the second day of anthesis the stigmatic fluid disappears, the stigmas become non-receptive to pollen and anther dehiscence begins. Self-pollination (direct or facilitated autogamy) cannot occur. Following the third day of anthesis, the flower submerges. The staminal and perianth parts abscise as the fruit matures underwater.



water lilies, flowers, insects, plant fertilization


Chaney, T.P. (1979). The floral biology of Nymphaea odorata Aiton (Unpublished thesis). Southwest Texas State University, San Marcos, Texas.


Rights Holder

Rights License

Rights URI