Boottia alata Gagnep.
Boottia bodinieri (H.Lév. & Vaniot) H.Lév. & Vaniot
Boottia lanceolata Gagnep.
Boottia thorelii Gagnep.
Damasonium alismoides (L.) R.Br.
Damasonium indicum Willd.
Damasonium javanicum Blume
Damasonium lactucifolium Planch.
Damasonium lancifolium C.Presl
Damasonium timorense Zipp. ex Span.
Damasonium tranquebariense Schult.f.
Hydrocharis bodinieri H.Lév. & Vaniot
Hymenotheca latifolia Salisb.
Ottelia alata (Gagnep.) H.Li
Ottelia bodinieri (H.Lév. & Vaniot) Dandy
Ottelia condorensis Gagnep.
Ottelia dioecia S.Z.Yan
Ottelia ensiformis Blanco
Ottelia hoffmeisteri Klotzsch
Ottelia indica (Willd.) Planch. ex Dalzell & A.Gibson
Ottelia japonica Miq.
Ottelia javanica (Blume) Voigt
Ottelia lactucifolia (Planch.) Walp.
Ottelia lanceolata (Gagnep.) Dandy
Ottelia philippinensis Ostenf.
Ottelia thorelii (Gagnep.) Dandy
Stratiotes alismoides L.
Stratiotes quinquealatus Stokes
Flowering plant growing in shallow water with the leaves emerging
Photograph by: J.M.Garg
Ottelia alismoides is a partly or fully submerged freshwater plant. A cluster of leaves are produced from a fibrous root system - these leaves can be very variable, with a petiole that can vary greatly in length depending upon the depth of water the plant is growing in. The leaves are usually submerged, except in very shallow water, but the flowers float when open, usually sinking below the surface after fertilization[
The plant is harvested from the wild for local use as a food and medicine. It is grown in ponds, where it helps to keep the water clear, and is also sometimes grown as an aquarium plant[
E. Asia - China, Japan, Korea, India, Sri Lanka, Nepal, Bangladesh, Myanmar, through southeast Asia to Philippines to New Guinea, Australia, Solomons
Common in stagnant water, lakes and slow moving streams, often growing gregariously in shallow water; at elevations up to 700 metres, occasionally to 1,000 metres[
|Other Uses Rating||
|Cultivation Status||Ornamental, Wild
The plant is often regarded locally as a troublesome aquatic weed and removed manually[
The petioles and tender leaves are eaten as a vegetable - they have an excellent flavour[
The leaves are used in Thailand for seasoning rice[
The fruit is edible[
]. It is sought after by children[
The leaves are antibacterial, febrifuge and rubefacient[
]. The plant is used in the topical treatment of haemorrhoids, and is applied to the arms and legs as a poultice against fever[
In clinical trials, an extract of the plant cured two cases of bilateral tuberculosis of the cervical lymph glands within 3 months. The results suggest that the plant is a promising medicinal herb with an anti-tubercular effect[
A study isolated the compounds otteliones A and B from the plant. These compounds showed a remarkable in vitro cytotoxicity against various cancer cell lines[
The plants are used to improve the water quality in ponds by capturing floating mud particles[
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