sinensis:[3] Nuphar pumila, the least water-lily,[4] is a perennial,[5] rhizomatous, aquatic[2] herb[6] in the family Nymphaeaceae native to subarctic and temperate Eurasia.

[10] The green,[12] 1–2 cm wide fruit[8] bears greenish brown,[12] ovoid to oblong, 3–5 mm long seeds.

[2] Later, it was elevated to the status of the separate species Nuphar pumila (Timm) DC.

[15][16] Nuphar pumila is native to China, Japan, Korea, Mongolia, Russia,[8] Switzerland,[9] the United Kingdom,[5] Austria, Germany, France, Spain,[17] Finland, Sweden, Denmark, and Poland.

[1] However, it is threatened by hybridisation with Nuphar lutea,[17][18][19][9] climate change,[19] pollution, and habitat destruction.

[7] It occurs in lakes, ponds[8] and slowly flowing rivers[6] in nutrient-poor waters at depths of 0.5–3 m.[9] The leaf mine species Hydromyza livens feeds on Nuphar pumila leaves.