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[2]
The reproductive biology of Nelumbo pentapetala (Nelumbonaceae) on the Upper Mississippi River. II. The insects associated with the transfer of pollen[J] . S. H. Sohmer,D. F. Sefton.Brittonia . 1978 (3)
[3]
Morphological studies of the Nymphaeaceae. VII. The floral biology of Nuphar Lutea subsp. macrophylla[J] . Edward L. Schneider,Lesa A. Moore.Brittonia . 1977 (1)