Amaranthus standleyanus

Parodi ex Covas

Indehiscent pigweed

AmaranthaceaeLeavesSeeds/NutsPotential hazards — see below
Caution — Parts of this plant may be toxic or require specific preparation. Verify with multiple sources before consuming.
Amaranthus standleyanus
iNaturalist · cc-by-nc
(c) Dewald du Plessis, some rights reserved (CC BY-NC), uploaded by Dewald du Plessis
Amaranthus standleyanus
iNaturalist · cc-by-nc
(c) Alex Dreyer, some rights reserved (CC BY-NC)

What to Eat

Edible parts: Seeds, Leaves

Leaves are best cooked and used as a spinach. The seeds can also be cooked, though they are very small and fiddly. Despite being nutritious, cooking them whole makes them gelatinous, and because the tiny seeds are difficult to fully crush in the mouth, some will pass through the digestive system without being assimilated.

Known Hazards

No members of this genus are known to be poisonous, but when grown on nitrogen-rich soils they are known to concentrate nitrates in the leaves. This is especially noticeable on land where chemical fertilizers are used. Nitrates are implicated in stomach cancers, blue babies and some other health problems. It is inadvisable, therefore, to eat this plant if it is grown inorganically.

Where to Find It

It is a temperate plant. In Argentina it grows up to 500 m above sea level.

Africa, Argentina, Britain, Europe, South Africa, Southern Africa, South America, Spain,

Countries: Andorra, Albania, Angola, Argentina, Austria, Bosnia & Herzegovina, Belgium, Burkina Faso, Bulgaria, Burundi, Benin, Bolivia, Brazil, Botswana, Belarus, Congo (DRC), Central African Republic, Congo (Republic), Switzerland, Cote d'Ivoire, Chile, Cameroon, Colombia, Cape Verde, Cyprus, Czechia, Germany, Djibouti, Denmark, Algeria, Ecuador, Estonia, Egypt, Eritrea, Spain, Ethiopia, Finland, France, Gabon, United Kingdom, French Guiana, Ghana, Gambia, Guinea, Equatorial Guinea, Greece, Guinea-Bissau, Guyana, Croatia, Hungary, Ireland, Iceland, Italy, Kenya, Comoros, Liechtenstein, Liberia, Lesotho, Lithuania, Luxembourg, Latvia, Libya, Morocco, Monaco, Moldova, Montenegro, Madagascar, North Macedonia, Mali, Mauritania, Malta, Mauritius, Malawi, Mozambique, Namibia, Niger, Nigeria, Netherlands, Norway, Peru, Poland, Portugal, Paraguay, Romania, Serbia, Russia, Rwanda, Seychelles, Sudan, Sweden, Slovenia, Slovakia, Sierra Leone, San Marino, Senegal, Somalia, Suriname, South Sudan, Sao Tome & Principe, Eswatini, Chad, Togo, Tunisia, Tanzania, Ukraine, Uganda, Uruguay, Venezuela, South Africa, Zambia, Zimbabwe

How to Identify

A frost-tender annual growing to 0.7 m (2 ft 4 in) tall. Features monoecious flowers pollinated by wind with self-fertility capability. Grows in light sandy, medium loamy, and heavy clay soils preferring good drainage. Tolerates mildly acidic, neutral, and basic soils. Requires full sun and moist soil conditions, unable to survive in shade.

How to Grow

We have very little information on this species and do not know how well it will grow in Britain, though it should succeed as a spring-sown annual. The following notes are based on the general needs of the genus. Prefers a well-drained fertile soil in a sunny position. Requires a hot sheltered position if it is to do well. Plants should not be given inorganic fertilizers, see notes above on toxicity. Most if not all members of this genus photosynthesize by a more efficient method than most plants. Called the 'C4 carbon-fixation pathway', this process is particularly efficient at high temperatures, in bright sunlight and under dry conditions.

Propagation: Sow seed in late spring directly in situ. For an earlier start, sow in a greenhouse and transplant after the last expected frost. Germination is usually rapid and reliable in warm soil, and a drop in temperature overnight can help promote it. Cuttings from growing plants root easily.

Medicinal Uses

None known.

Other Uses

Yellow and green dyes can be obtained from the whole plant. The plant is also used as a dynamic accumulator.

Wikipedia

A frost-tender annual growing to 0.7 m (2 ft 4 in) tall. Features monoecious flowers pollinated by wind with self-fertility capability. Grows in light sandy, medium loamy, and heavy clay soils preferring good drainage. Tolerates mildly acidic, neutral, and basic soils. Requires full sun and moist soil conditions, unable to survive in shade.

Notes

There are about 60 Amaranthus species.

Names & Synonyms
Amaranthus vulgatissimus (Speg.)
References (5)
  • Darwiniana 5:339. 1941
  • Magwede, K., van Wyk, B.-E., & van Wyk, A. E., 2019, An inventory of Vhavenḓa useful plants. South African Journal of Botany 122 (2019) 57–89
  • Plants for a Future database, The Field, Penpol, Lostwithiel, Cornwall, PL22 0NG, UK. http://www.scs.leeds.ac.uk/pfaf/
  • Ruiters-Welcome, A. K., 2019, Food plants of southern Africa. Ph.D. thesis. Univ. of Johannesburg p 10
  • Welcome, A. K. & Van Wyk, B.-E., 2019, An inventory and analysis of the food plants of southern Africa. South African Journal of Botany 122 (2019) 136–179

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