Nymphaea pygmea (Salisb.) W. T. Aiton Nymphaea pygmea (Salisb.) W. T. Aiton Nymphaea pygmea (Salisb.) W. T. Aiton is a species hardy waterlily. It is a white pygmy waterlily with olive green pads. This specimen was collected in Japan by Garet Uemura. It’s date of publication is 1811.