Environmental Engineering Reference
In-Depth Information
VALLISNERIA SPIRALIS
LINNAEUS
Phylum: Magnoliophyta
Class: Liliopsida
Order: Alismatales
Family: Hydrocharitaceae
Common name: Eelgrass, tapegrass
Distribution: Southeast Asia, South Europe
Habitat: Lakes, ponds, marshes, streams
Description: It is an evergreen perennial species. Leaves are narrow and linear
and are pale green to reddish. Leaves measure 100 m long and 2 cm wide.
Flowers are dioecious and are carried on long spiral stalks.
Compounds and activities: The extract of this species has yielded bioactive
compounds, viz., 2-ethyl-3-methylmalemide, dihydroactinidiolide, 4-oxo-
β-ionone, 3-hydroxy-5,6-epoxy-β-lonone, loliolide, and 6-hydroxy-3-oxo-α-
lonone. All these compounds showed antialgal properties and inhibitory
effects on
Microcystis aeruginosa
(Xian et al., 2006).
SAGITTARIA TRIFOLIA
LINNAEUS
