English names:
Common water plantain, mad-dog weed.
Common water plantain, mad-dog weed.
Description:
Marsh herb, 40-50 cm. high. Rhizome stout, globular. Leaves entire, long-petioled, forming a rosette; nerves curved. Inflorescence in terminal umbelliform cyme; scape long, flowers white, cylindrical. Fruit: ah akene.
Flowering period:
October - November.
Distribution:
Wild and cultivated species in rice-swamps and ponds.
Parts used:
The rhizomes, collected in autumn, are sun-dried or heat-dried. They are soaked in alcohol or in salt solution, then torrefied until they turn yellow before use.
Chemical composition:
The rhizomes contain an essential oil consisting of alisol A, B, C and epialisol A; D-glucose, D-fructose, sucrose; b-sitosterol, lecithin, choline, resin, protein and starch.
Therapeutic uses:
The rhizome is diuretic and used in treating oedema, nephritis, dysuria, haematuria, pollakiuria, urodynia, urinary lithiasis, flatulence, vomiting and diarrhoea. It is administered in a dose of 8 to 16g per day in the form of a decoction or pills. It is likewise prescribed as an antidiabetic and as a galactagogue in hypogalactia.
Source: Medicinal plants in Viet Nam (Institute of Materia Medica - HANOI - WHO/WPRO, 1990, 444 p.)
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