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Nuphar japonicum is
a perennial herb inhabiting shallow ponds or swamps; the underwater
leaves are long, narrow, and membraneous. The ones above the water
are in the long-oblong shape, 20-30cm in length. Long flower stalks
emerged from rhizomes set single, bowl-like, 4-5cm-in-diameter
flowers on their tops; petal-like sepals are 5 in number, yellow,
which turn green after flower. The petals are in the shape of an
oblong, half the height of the sepals, bending outwards. Bloom time:
June-September. |
Wild plants in and around Shimane
島根とその周辺の野生植物
