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Amaranthus spinosus

Common name:	Spiny Amaranth	Family:	Amaranthaceae
Author:	L.	Botanical references:	200
Synonyms:
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.
Range:	Tropical America.
Habitat:	Roadsides, waste places and fields in South-eastern N. America[72].
Edibility Rating (1-5):	2	Medicinal Rating (1-5):	3

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	A. spinosa[H] A. spinosis[E]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Amaranth [H], Bajem Doeri [E], Bayam Duri [E], Bayam Hutam [E], Kanak Kanak Pukul Lendir [E], Parietaire A Piquant [E], Spiny Amaranth [P,B,L],
Epithets:	From a Dictionary of Botanical Epithets
	amara = bitter spinosus = spiny
Systematics:	From a USDA Plants Database
	Order: Caryophyllales. Amaranth family
Other Range Info:	From the Ethnobotany Database
	Cambodia Ghana India India(Santal) Java Malaya Mauritius Philippines Swaziland
Noxious, Invasive and Injurious Weeds	From USDA PLANTS database, Weeds Australia , DEFRA Injurious Weeds
	Listed as noxious/invasive for: USA Invasive.

Physical Characteristics

Annual growing to 0.6m. It is hardy to zone 5 and is frost tender. The flowers are monoecious (individual flowers are either male or female, but both sexes can be found on the same plant) and are pollinated by Wind. The plant is self-fertile. We rate it 2/5 for edibility and 3/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils and requires well-drained soil. The plant prefers acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It requires moist soil.

Habitats and Possible Locations

Cultivated Beds.

Edible Uses

Leaves Seed.

Leaves and stems - raw or cooked as a spinach[2, 61, 177]. If older leaves and stems are used the spines must be removed[183]. Highly esteemed[183]. The dried leaves contain (per 100g) 267 - 276 calories, 20 - 34.4% protein, 2 - 4.5% fat, 45 - 54% carbohydrate, 9.8 - 10.4% fibre, 16.6 - 24% ash, 1795 - 5333mg calcium, 333 - 460mg phosphorus, 13.5 - 152.7mg iron, 13 - 37mg sodium, 337 - 3528mg potassium, 27.9 - 40.8mg betacarotene equivalent, 0.06mg thiamine, 2.02mg riboflavin, 7.7 - 8.6mg niacin and 503mg ascorbic acid[218].
Seed - cooked. Very small but easy to harvest and very nutritious. The seed can be cooked whole, and becomes very gelatinous like this, but it is rather difficult to crush all of the small seeds in the mouth and thus some of the seed will pass right through the digestive system without being assimilated[K].

Composition

Leaves (Dry weight): In grammes per 100g weight of food:
Water: 0 Calories: 276 Protein: 30 Fat: 4.5 Carbohydrate: 50 Fibre: 10 Ash: 20
In milligrammes per 100g weight of food:
Calcium: 5000 Phosphorus: 450 Iron: 100 Sodium: 30 Potassium: 3000 VitaminA: 40 Thiamine: 0.06 Riboflavin: 2.02 Niacin: 8 VitaminC: 503

Medicinal Uses

Disclaimer

Antidote Astringent Diaphoretic Emmenagogue Emollient Febrifuge VD.

The seed is used as a poultice for broken bones[218].
The plant is astringent, diaphoretic, diuretic, emollient, febrifuge and galactogogue[4, 61, 147, 218, 238, 240, 272]. It is used internally in the treatment of internal bleeding, diarrhoea and excessive menstruation[238, 254]. It is also used in the treatment of snake bites[243]. Externally, it is used to treat ulcerated mouths, vaginal discharges, nosebleeds and wounds[238, 243]. The plant can be used fresh or it can also be harvested when coming into flower and dried for later use[238].
The root is emmenagogue and galactogogue[243]. A paste of the root is used in the treatment of menorrhagia, gonorrhoea, eczema and colic[243, 272]. It helps to remove pus from boils[272]. The juice of the root is used in Nepal to treat fevers, urinary troubles, diarrhoea and dysentery[272]. It is also used, often combind with the root juice of Dichrophela integra and Rubus ellipticus, to treat stomach disorders and, on its own, to treat indigestion and vomiting that occur after eating unusual foods[272].

Other Uses

Dye.

Yellow and green dyes can be obtained from the whole plant[168].
A red pigment obtained from the plant (the report does not specify which part of the plant) is used as a colouring in foods and medicines[238].

Cultivation details

Prefers a well-drained fertile soil in a sunny position[200]. Requires a hot sheltered position if it is to do well[K].
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[196].

Propagation

Seed - sow late spring in situ. An earlier sowing can be made in a greenhouse and the plants put out after the last expected frosts. Germination is usually rapid and good if the soil is warm[133]. A drop in temperature overnight aids germination[133].
Cuttings of growing plants root easily[206].

Suppliers

For more details of plant suppliers please see our Suppliers Page which lists many more places to look.

Web References

Details of Medicinal Uses, Habitats, etc. in M. Grieve A Modern Herbal (1931) [4]
[L] Scientific and Common Names (some photos) from Lepidoptera and some other life forms
[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.
[V] Images from the Vascular Plant Image Gallery of the Texas A& M Bioinformatics Working Group.
[B] Data (Latin & Common names, other references) from the BONAP's Synonymized Checklist of the Vascular Flora of the United States, Puerto Rico, and the Virgin Islands.
[PHARM] Phytochemical Data (common names, uses, countries) from Dr Duke's Phytochemical Database.
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[C] Taxon data. from the CalFlora database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for Amaranthus spinosa (a possible synonym).

[H] Details of Scandanavian and European Common names in Henriette's names database

References for Amaranthus spinosis (a possible synonym).

[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.

References for the family Amaranthaceae.

[CHINA] Draft Data Very detailed botanical/identification info. from the Flora of China.

See the PFAF Links Pages for other sources.

Also try Photos and info from the The Plants Database which has 14,000 images.

References

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[2] Hedrick. U. P. Sturtevant's Edible Plants of the World. Dover Publications 1972 ISBN 0-486-20459-6
Lots of entries, quite a lot of information in most entries and references.

[4] Grieve. A Modern Herbal. Penguin 1984 ISBN 0-14-046-440-9
Not so modern (1930's?) but lots of information, mainly temperate plants.

[61] Usher. G. A Dictionary of Plants Used by Man. Constable 1974 ISBN 0094579202
Forget the sexist title, this is one of the best books on the subject. Lists a very extensive range of useful plants from around the world with very brief details of the uses. Not for the casual reader.

[72] Small. Manual of the Southeastern Flora.
Getting rather dated now, it covers Southeastern N. America. No pictures, it is not for the casual reader.

[133] Rice. G. (Editor) Growing from Seed. Volume 1. Thompson and Morgan. 1987
Very readable magazine with lots of information on propagation.

[147] ? A Barefoot Doctors Manual. Running Press ISBN 0-914294-92-X
A very readable herbal from China, combining some modern methods with traditional chinese methods.

[168] Grae. I. Nature's Colors - Dyes from Plants. MacMillan Publishing Co. New York. 1974 ISBN 0-02-544950-8
A very good and readable book on dyeing.

[177] Kunkel. G. Plants for Human Consumption. Koeltz Scientific Books 1984 ISBN 3874292169
An excellent book for the dedicated. A comprehensive listing of latin names with a brief list of edible parts.

[183] Facciola. S. Cornucopia - A Source Book of Edible Plants. Kampong Publications 1990 ISBN 0-9628087-0-9
Excellent. Contains a very wide range of conventional and unconventional food plants (including tropical) and where they can be obtained (mainly N. American nurseries but also research institutes and a lot of other nurseries from around the world.

[196] Popenoe. H. et al Lost Crops of the Incas National Academy Press 1990 ISBN 0-309-04264-X
An excellent book. Very readable, with lots of information and good pictures of some lesser known food plants of S. America.

[200] Huxley. A. The New RHS Dictionary of Gardening. 1992. MacMillan Press 1992 ISBN 0-333-47494-5
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.

[206] Larkcom J. Oriental Vegetables John Murray 1991 ISBN 0-7195-4781-4
Well written and very informative.

[218] Duke. J. A. and Ayensu. E. S. Medicinal Plants of China Reference Publications, Inc. 1985 ISBN 0-917256-20-4
Details of over 1,200 medicinal plants of China and brief details of their uses. Often includes an analysis, or at least a list of constituents. Heavy going if you are not into the subject.

[238] Bown. D. Encyclopaedia of Herbs and their Uses. Dorling Kindersley, London. 1995 ISBN 0-7513-020-31
A very well presented and informative book on herbs from around the globe. Plenty in it for both the casual reader and the serious student. Just one main quibble is the silly way of having two separate entries for each plant.

[240] Chopra. R. N., Nayar. S. L. and Chopra. I. C. Glossary of Indian Medicinal Plants (Including the Supplement). Council of Scientific and Industrial Research, New Delhi. 1986
Very terse details of medicinal uses of plants with a wide range of references and details of research into the plants chemistry. Not for the casual reader.

[243] Medicinal Plants of Nepal Dept. of Medicinal Plants. Nepal. 1993
Terse details of the medicinal properties of Nepalese plants, including cultivated species and a few imported herbs.

[254] Chevallier. A. The Encyclopedia of Medicinal Plants Dorling Kindersley. London 1996 ISBN 9-780751-303148
An excellent guide to over 500 of the more well known medicinal herbs from around the world.

Readers Comments

Weeds as a future source for human consumption

Martha D�az B (martha@ecologia.edu.mx) Thu Jun 28 17:02:26 2001

We reciently recieved this article on the use of various weeds in south america. We though that you might enjoy it.

Abstract

Weeds may constitute an additional food source for humans. Up to 66% of weed species are edible and abound in urban and agricultural environments. A total of 43 species were sampled in tropical areas in Coatepec Mexico (e.g. roadsides, urban vacant lots, streets, sugar cane and coffee plantations). A similar survey performed in a temperate area in Bariloche Argentina with 32 species sampled. At a greater geographic scale, a comparison between Mexican and Argentine weeds shows that, proportionately, the food parts vary a little between regions. In general, the uses go from leaves, seeds, roots, fruits, and flowers.

Link: Weeds as a future source for human consumption

Cross references: Plants: Acalypha wilkesiana, Amaranthus dubius, Amaranthus hybridus, Anagallis arvensis, Alstroemeria aurea, Berberis buxifolia, Brassica rapa, Bidens odorata, Cichorius intybus, Cirsium vulgare, Claytonia perfoliata, Cytisus scoparius, Chenopodium album, Chrysanthemum leucanthemum, Canna indica, Chenopodium ambrosioides, Commelina diffusa, Commelina erecta, Drymaria cordata, Drymaria gracilis, Galinsoga quadriradiata, Heliconia caribaea, Hydrocotyle bonariensis, Hydrocotyle mexicana, Ipomoea purpurea, Ipomoea tilliacea, Ipomoea triloba, Hypochoeris radicata, Lactuca serriola, Malus sylvestris, Medicago lupulina, Melilotus albus, Margaranthus sulphureus, Oenothera odorata, Osmorhiza chilensis, Oxalis corniculata, Oxalis latifolia, Phaseolus vulgaris, Piper auritum, Plantago hirtella, Plantago lanceolata, Portulaca oleracea, Papaver rhoeas, Rumex acetosella, Rumex longifolius, Rumex obtusifolius, Sida acuta, Sida glabra, Sida rhombifolia, Sida spinosa, Solanum nigrum, Sonchus oleraceus, Spilanthes americana, Sanguisorba minor, Silybum marianum, Sonchus asper, Sonchus oleraceus, Stellaria media, Taraxacum officinale, Tragopogon dubius, Tradescantia fluminensis, Tagetes micrantha, Trifolium repens, Tripogandra serrulata, Xanthosoma robustum, Youngia japonica. Genera: Mentha.

Weeds as a future source for human consumption

Klaus (allmendeperma@web.de) Thu Aug 16 16:12:55 2001

I really wonder what this has to do with montia perfoliata. The edible uses of weeds might be interesting, but not as a comment to this plant.

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