Hydrilla verticillata is a perennial herb found in
ponds or flowing waters. In the autumn, it forms overwintering buds,
which sink to the bottom and remain dormant throughout the winter.
Stems extend in the water and set themselves in whorls of two to six
1-1.5cm long linear ones. It is dioecious with hydrophilous flowers.
As mature male flowers float on the water, pollen flows to the
female flowers' stigmas. Bloom Time: August-October.
Wild plants in and around Shimane
島根とその周辺の野生植物
