Great Duckweed (Spirodela polyrrhiza)

Perennial
Lemna polyrhiza
Common Name Latin Name Plant Family
Great Duckweed
Spirodela polyrrhiza
Lemnaceae

None known

  • Medicinal Use

    The whole plant is antipruritic, antipyretic, cardiotonic, carminative, diaphoretic, diuretic[147, 176, 218]. It stimulates the appearance of measles rash[147, 176]. It is used in the treatment of colds, measles, oedema and difficulty in urination[176].

  • Edible Use

    The plant is sometimes used as a food[177, 183]. No more details are given.

  • Cautionary Notes

    None known

Cultivation & Habitat

The plant divides freely in the growing season and does not need help.
Requires a sunny position in still water that is rich in nitrates and lime[200]. A very small plant without differentiation into various parts such as leaf, stem etc (they are called Thalli), it is 8mm in diameter and often forming a mat on the water surface and perennating by means of buds (turions) that sink in autumn and rise to the surface in spring. The so-called rootcap (really only an apical swelling), has a higher specific gravity than any other part of the plant, righting capsized individuals[200].
Europe, including Britain, south and east from Scandanavia to N. Africa and Asia. America, Australia

Become ungovernable, break the chains of the matrix; grow and forage your own food and medicine.

*None of the information on this website qualifies as professional medical advice. Take only what resonates with your heart and use your own personal responsibility for what’s best for you. For more information [brackets] [000], see bibliography.