Elodea Michx

Greek helodes – of the marshes.

Submerged aquatic perennial herbs, generally with stolons. Leaves submerged, opposite or whorled, mostly linear, 1-nerved. Flowers unisexual, sometimes on the same plant, inconspicuous and held at the water surface; summer. Male flowers 1(3). Female flowers 1. Stamens 3-9.

Grown in ponds and aquaria.Widely naturalised worldwide and often confused with other genera especially Egeria.

12 species from America. 1 species naturalised in Australia.

Cuttings and stolons.

Flowers held at water surface; floral segments all of same size cf. Egeria.

Source: Spencer, R. (2005). Hydrocharitaceae. In: Spencer, R.. Horticultural Flora of South-eastern Australia. Volume 5. Flowering plants. Monocotyledons. The identification of garden and cultivated plants. University of New South Wales Press.

kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Lilianae
order      Alismatales
family       Hydrocharitaceae
Higher taxa
Subordinate taxa
species         Elodea canadensis Rich.