TL;DR: Four Mexican Nymphaea species were confirmed to be different from each other and established that N. pulchella represents a different taxa than N. ampla, and the 5-glycosyl isoflavones could be considered as a taxonomic character of this group of plants.
TL;DR: Different aspects of the pollination biology and floral behavior of Nymphaea elegans Hooker (Nymphaeaceae) are described, including the stigmatic fluid which washes pollen from the insects and pollination is achieved.
TL;DR: The decomposition rate of floating leaves of N. elegans leaves is faster than that of other aquatic plants and may be attributed to the fact that the plant has a low carbon to nitrogen ratio.
Abstract: Contributions of abiotic and biotic processes to the decomposition of floating leaves of Nymphaea elegans were separately evaluated by comparing the rate obtained from an in situ experiment of submerging dry leaf material in a lake, and that from a laboratory experiment of submerging dry leaf material in lake water with a bio-fixing reagent. It took 8 days to decompose 79.4% of the initial dry weight of the floating leaf of N. elegans in a tropical lake. Of the dry weight loss, 32.9% and 67.1% were atributed to abiotic and biotic decomposition, respectively. The relationship between decomposition rate and the mesh size of the leaf litter bags was examined by the application of a mathematical model. A reasonable value of decomposition loss at an early stage could be obtained using a bag with a mesh opening of 9.9 mm2. The decomposition rate of floating leaves is faster than that of other aquatic plants. Rapid decomposition of N. elegans leaves may be attributed to the fact that the plant has a low carbon to nitrogen ratio.