Egeria Planch.

A water nymph of Roman mythology.

Aquatic perennial herbs. Leaves submerged, whorled in groups of 3-8, spathe with a cleft. Flowers floating or held above the surface, conspicuous, the sexes on separate plants, perianth in 2 whorls, each of 3 segments, the outer sepal-like, the inner large and petal-like. Male flowers 2-4 per spathe, soon detached and free-floating, stamens 9. Female flower solitary. Fruit a capsule with 1-5 seeds.

Aquarium plants. The genus sometimes included in Elodea.

2 species from subtropical S America. 1 species naturalised in Australia.


Leaves 4-5 together in a whorl; flowers held above the water and with inner segments larger than the outer ones cf. Elodea.

St John (1961).

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.

Hero image
kingdom Plantae
phylum   Tracheophyta
class    Magnoliopsida
superorder     Lilianae
order      Alismatales
family       Hydrocharitaceae
Higher taxa
Subordinate taxa
species         Egeria densa Planch.