Persicaria senegalensis

(Meisn.) Sojak

Silver snake root

PolygonaceaeLeavesRootsPotential hazards — see below
Caution — Parts of this plant may be toxic or require specific preparation. Verify with multiple sources before consuming.
Persicaria senegalensis
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(c) Shaun Swanepoel, some rights reserved (CC BY), uploaded by Shaun Swanepoel
Persicaria senegalensis
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(c) Sylvain Piry, some rights reserved (CC BY-NC), uploaded by Sylvain Piry
Persicaria senegalensis
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(c) Phil White, some rights reserved (CC BY-NC), uploaded by Phil White

What to Eat

Edible parts: Leaves, Tuber, Root, Vegetable

The young leaves are cooked and eaten as a vegetable, and the plant is burnt to make a vegetable salt.

Known Hazards

The roots are said to be toxic.

Where to Find It

It is a tropical plant. It grows in standing water. It grows between 400-3,000 m above sea level.

Africa, Botswana, Burkina Faso, Central Africa, Congo, East Africa, Egypt, Eswatini, Ethiopia, Guinea, Guinée, Guinea-Bissau, Kenya, Madagascar, Malawi, Mozambique, North Africa, Senegal, Sierra Leone, South Africa, Southern Africa, Swaziland, Tanzania, West Africa, Zambia, Zimbabwe,

Countries: Angola, Burkina Faso, Burundi, Benin, Botswana, Congo (DRC), Central African Republic, Congo (Republic), Cote d'Ivoire, Cameroon, Cape Verde, Djibouti, Algeria, Egypt, Eritrea, Ethiopia, Gabon, Ghana, Gambia, Guinea, Equatorial Guinea, Guinea-Bissau, Kenya, Comoros, Liberia, Lesotho, Libya, Morocco, Madagascar, Mali, Mauritania, Mauritius, Malawi, Mozambique, Namibia, Niger, Nigeria, Rwanda, Seychelles, Sudan, Sierra Leone, Senegal, Somalia, South Sudan, Sao Tome & Principe, Eswatini, Chad, Togo, Tunisia, Tanzania, Uganda, South Africa, Zambia, Zimbabwe

How to Identify

A robust herb. It keeps growing from year to year. It grows 3 m tall. The leaves are alternate and bright green. The flowers are in clusters on long spikes. They are pink. The fruit is a shiny black nut.

How to Grow

Propagation: Seed - sow in situ. Germination is usually free and easy.

Medicinal Uses

A decoction of the leaves, combined with other plants, is drunk and also taken by enema as a treatment for syphilis. The pounded leaves are applied to swellings, syphylitic sores or skin affections. The pounded roots are applied to swellings, syphylitic sores or skin affections. An abundance of saponins is present in the leaves. A crude water extract of the plant killed the freshwater snails Lymnae natalensis and Biomphalaria pfeifferi, and so may be of value in controlling certain water-borne diseases.

Other Uses

A black dye is prepared from the roots.

Wikipedia

Source ↗

Persicaria senegalensis is a species of perennial herb in the family Polygonaceae. They have a self-supporting growth form and simple, broad leaves.

Names & Synonyms
Polygonum senegalense Meisn.Polygonum lanigerum R. Br.
References (10)
  • Busson, 1965,
  • Glover et al, 1966b,
  • Grubben, G. J. H. and Denton, O. A. (eds), 2004, Plant Resources of Tropical Africa 2. Vegetables. PROTA, Wageningen, Netherlands. p 414
  • Long, C., 2005, Swaziland's Flora - siSwati names and Uses http://www.sntc.org.sz/flora/
  • Mutie, F. M., et al, 2023, Important Medicinal and Food Taxa (Orders and Families) in Kenya, Based on Three Quantitative Approaches. Plants 2023, 12, 1145
  • Peters, C. R., O'Brien, E. M., and Drummond, R.B., 1992, Edible Wild plants of Sub-saharan Africa. Kew. p 162
  • Pickering, H., & Roe, E., 2009, Wild Flowers of the Victoria Falls Area. Helen Pickering, London. p 98
  • Scudder, 1962, 1971,
  • Swaziland's Flora Database http://www.sntc.org.sz/flora
  • World Checklist of Useful Plant Species 2020. Royal Botanic Gardens, Kew

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