Greek hydor – water, kleis – key.
Free-floating or rooted stoloniferous annual or perennial herbs. Leaves basal or clustered along the stems and with long, sheathing stalks that have transverse partitions. Flower clusters axillary or terminal, occasionally flowers terminal. Flowers with yellow petals. Stamens 6-many, sterile stamens sometimes present. Ovary of 3 or 6 carpels united at the base. Fruit containing numerous seeds.
Grown in ponds, aquaria and tubs for the attractive foliage and yellow flowers.
About 9 species from S America. 1 species naturalised in Victoria.
Leaves usually floating, the stalks with transverse partitions.
Holm-Nielsen &Haynes (1985).
Source: (2005). Limnocharitaceae. In: . Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.