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Nymphae tetragona is a perennial found in ponds or
swamps; the rhizomes are thick and short. Leaves emerge in bundles
with long petioles, broadly elliptical, deeply cleft in heart shape
at their bases, 10-20cm long, and float on the water. The petioles
set single white flowers on the tops, each approximately 5cm in
diameter, open in the daytime and close in the nighttime. The
flowers are 8-15-petaled with four sepals. Round sap fruit ripens in
the water as the flowers have gone. Bloom time. June-September. |
Wild plants in and around Shimane
島根とその周辺の野生植物
