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Chenopodium ambrosioides anthelminticum
| Common name: |
Wormseed |
Family: |
Chenopodiaceae |
| Author: |
(L.)Gray. |
Botanical references: |
200, 204 |
| Synonyms: |
Chenopodium anthelminticum (L.) |
| Known Hazards: |
The essential oil in the seed and flowering plant is highly toxic. In excess it can cause dizziness, vomiting, convulsions and even death[222, 238]. The plant can also cause dermatitis or other allergic reactions[222].
The leaves and seeds of all members of this genus are more or less edible. However, many of the species in this genus contain saponins, though usually in quantities too small to do any harm. Although toxic, saponins are poorly absorbed by the body and most pass straight through without any problem. They are also broken down to a large extent in the cooking process. Saponins are found in many foods, such as some beans. Saponins are much more toxic to some creatures, such as fish, and hunting tribes have traditionally put large quantities of them in streams, lakes etc in order to stupefy or kill the fish[K].
The plants also contain some oxalic acid, which in large quantities can lock up some of the nutrients in the food. However, even considering this, they are very nutritious vegetables in reasonable quantities. Cooking the plant will reduce its content of oxalic acid. People with a tendency to rheumatism, arthritis, gout, kidney stones or hyperacidity should take especial caution if including this plant in their diet since it can aggravate their condition[238]. |
| Range: |
Tropical America. Naturalized in S. Europe[50]. |
| Habitat: |
Mainly found on dry wasteland and cultivated ground[204, 268]. |
| 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. |
| Ambrina ambrosioides[B,P]
C. ambrosioides[B,C,CAL,DUTCH,E,G,H,HPIC,HORTIPLEX,L,R,Smk,P]
C. ambrosioides ssp. euambrosioides[B,P]
C. ambrosioides var. ambrosioides[B,P]
C. ambrosioides var. anthelminticum[B,G,P]
C. ambrosioides var. chilense[B,P]
C. ambrosioides var. typicum[B,P]
C. ambrosioides var. vagans[B,P]
Teloxys ambrosioides[B,P]
Teloxys vagans[B,P]
|
| Other Common Names: | From various places around the Web, may not be correct. See below. |
| American Wormseed [H], Apasote [E], Chenopode [E], Epazote [H], Feuilles A Vers [E], Herbe A Vers [E], L [E], Meksika Cayi [E], Mexican Tea [P], Mexican-tea [B,L], Paico [E], Pazote [E], Semen Contra [E], Semin Contra [E], Simon Contegras [E], Welriekende Ganzenvoet [D], Wormseed [H], |
| Epithets: | From a Dictionary of Botanical Epithets |
|
ambrosioides = like Ambrosia;
|
| Systematics: | From a USDA
Plants Database |
|
Order: Caryophyllales. Goosefoot family
|
| Other Range Info: |
From the Ethnobotany Database |
|
Bahamas; Brazil; Chile; China; Colombia; Dominican Republic; Guatemala; Haiti; Mexico; Mexico(Chinantec); Panama; Peru; Spain; Trinidad; Turkey; Us; Us(Appalachia); Venezuela
|
Physical Characteristics
Annual/Perennial growing to 1m by 0.7m . It is hardy to zone 8 and is frost tender. It is in flower from July to October, and the seeds ripen from August to October. The scented flowers are hermaphrodite (have both male and female organs) and are pollinated by Wind.
We rate it 2/5 for edibility and
3/5 for medicinal use.
The plant prefers light (sandy), medium (loamy) and heavy (clay) soils.
The plant prefers acid, neutral and basic (alkaline) soils and can grow in very alkaline soil.
It cannot grow in the shade.
It requires moist soil.
Habitats and Possible Locations
Cultivated Beds.Edible Uses
Leaves; Seed; Tea.
Leaves - cooked[2]. The tender leaves are sometimes used as a
potherb[183]. Used as a condiment in soups etc[46, 61, 105], it is said to
reduce flatulence if eaten with beans[183]. The leaves have a rank taste due
to the presence of resinous dots and sticky hairs[85]. The raw leaves should
only be eaten in small quantities, see the notes above on toxicity.
Seed - cooked[105, 161]. The seed is small and fiddly, it should be soaked
in water overnight and thoroughly rinsed before it is used in order to remove
any saponins.
An infusion of the leaves is a tea substitute[183].
Medicinal Uses
Disclaimer
Analgesic; Antiasthmatic; Antifungal; Carminative; Stomachic; Vermifuge.
Wormseed is a Central American herb that has been used for centuries to
expel parasitic worms from the body[254].
The whole plant is analgesic, antiasthmatic, carminative, stomachic and
vermifuge[1, 4, 21, 57, 145, 147, 171]. An infusion can be used as a
digestive remedy, being taken to settle a wide range of problems such colic
and stomach pains[254]. Externally, it has been used as a wash for
haemorrhoids, as a poultice to detoxify snake bites and other poisons and is
thought to have wound-healing properties[254]. Use with caution and
preferably under the supervision of a qualified practitioner[21, 238]. This
remedy should not be prescribed for pregnant women[238]. See also the notes
above on toxicity.
Until fairly recently, this was one of the most commonly used vermifuges,
though it has now been largely replaced by synthetic drugs[222]. The seed, or
an essential oil expressed from the seed, was used[213]. It is very effective
against most parasites, including the amoeba that causes dysentery, but is
less effective against tapeworm[213, 238]. Fasting should not precede its use
and there have occasionally been cases of poisoning caused by this
treatment[213]. The oil is used externally to treat athlete's foot and insect
bites[238]. One report says that it is an essential oil that is
utilised[240]. This is obtained from the seed or the flowering stems, it is
at its highest concentration in the flowering stems before seed is set, these
contain around 0.7% essential oil of which almost 50% is the active vermifuge
ascaridol[240]. The essential oil is of similar quality from plants
cultivated in warm climates and those in cool climates[240].
The leaves are added in small quantities as a flavouring for various cooked
bean dishes because their carminative activity can reduce flatulence[222]. We have a more details factsheet on the history and medicinal use of this plant. Email webmaster@pfaf.org for details.
Other Uses
Dye; Insecticide.
The plant is used as a fumigant against mosquitoes and is also added to
fertilizers to inhibit insect larvae[238].
Gold/green dyes can be obtained from the whole plant[168].
Cultivation details
An easily grown plant, succeeding in most soils but disliking shade[1,
200]. It prefers a moderately fertile soil[200]. Tolerates a pH in the range
5.2 to 8.3.
Plants are annuals or short-lived perennials[238]. They are not very hardy
when grown outdoors in Britain and so are best grown as an annual[238].
Plants have often self-sown freely in our Cornish trial grounds, but the seed
germinates in the autumn and does not manage to survive the winter[238].
Wormseed is sometimes grown as a medicinal and culinary plant, especially in
its native Mexico. This sub-species is more active medicinally than the type
species and is the form most often cultivated for its vermicidal activity[4,
46, 50, 238]. It is one of the safest and best vermifuges available[4].
The bruised leaves emit an unpleasant foetid odour[245].
Propagation
Seed - whilst it can be sown in situ in mid to late spring, we have had
better results by sowing the seed in a cold frame in early spring. Put a few
seeds in each pot and thin to the best plant if necessary. Germination rates
are usually very good and the seedlings should appear within a few days of
sowing the seed. Plant out in late spring, after the last expected frosts.
Scent
-
Leaves: Crushed
- The bruised leaves emit an unpleasant foetid odour.
Suppliers
For more details of plant suppliers please see our Suppliers Page which lists many more places to look.
Web References
References for Chenopodium ambrosioides (a possible synonym).
- [H] Details of Scandanavian and European Common names in Henriette's names database
- [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.
- [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.
- [G] Data
(Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
- [C] Taxon data.
from the CalFlora database.
- [PHARM] Phytochemical Data
(common names, uses, countries) from Dr Duke's Phytochemical Database.
- [P] Data.
(uses, distribution, wetland) from the USDA'a Plants database.
- [S] Illustration
from the Southwest School of Botanical Medicine
- [S] Illustration
from the Southwest School of Botanical Medicine
- [R] Rainforest medicinal Data
(common names, medicinal uses, images) from the Rain-Tree.
- [HP] Links, Photos, Suppliers from Hortiplex Plant Database
References for Chenopodium ambrosioides var. ambrosioides (a possible synonym).
References for Chenopodium anthelminticum (a possible synonym).
- [H] Details of Scandanavian and European Common names in Henriette's names database
References for chenopodium ambrosioides (a possible synonym).
References for the family Chenopodiaceae.
See the PFAF Links Pages for other sources.
Also try Photos and info from the The Plants Database which has 14,000 images.
[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.
[1] F. Chittendon. RHS Dictionary of Plants plus Supplement. 1956 Oxford University Press 1951
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaces in 1992 by a new dictionary (see [200]).
[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.
[21] Lust. J. The Herb Book. Bantam books 1983 ISBN 0-553-23827-2
Lots of information tightly crammed into a fairly small book.
[46] Uphof. J. C. Th. Dictionary of Economic Plants. Weinheim 1959
An excellent and very comprehensive guide but it only gives very short descriptions of the uses without any details of how to utilize the plants. Not for the casual reader.
[50] ? Flora Europaea Cambridge University Press 1964
An immense work in 6 volumes (including the index). The standard reference flora for europe, it is very terse though and with very little extra information. Not for the casual reader.
[57] Schery. R. W. Plants for Man.
Fairly readable but not very comprehensive. Deals with plants from around the world.
[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.
[85] Harrington. H. D. Edible Native Plants of the Rocky Mountains. University of New Mexico Press 1967 ISBN 0-8623-0343-9
A superb book. Very readable, it gives the results of the authors experiments with native edible plants.
[105] Tanaka. T. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing 1976
The most comprehensive guide to edible plants I've come across. Only the briefest entry for each species, though, and some of the entries are more than a little dubious. Not for the casual reader.
[145] Singh. Dr. G. and Kachroo. Prof. Dr. P. Forest Flora of Srinagar. Bishen Singh Mahendra Pal Singh 1976
A good flora of the western Himalayas but poorly illustrated. Some information on plant uses.
[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.
[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237. U.S. Depf of Agriculture.
A comprehensive but very terse guide. Not for the casual reader.
[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.
[171] Hill. A. F. Economic Botany. The Maple Press 1952
Not very comprehensive, but it is quite readable and goes into some a bit of detail about the plants it does cover.
[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.
[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.
[204] Livingstone. B. Flora of Canada National Museums of Canada 1978 ISBN 0-660-00025-3
In 4 volumes, it does not deal with plant uses but gives descriptions and habitats.
[213] Weiner. M. A. Earth Medicine, Earth Food. Ballantine Books 1980 ISBN 0-449-90589-6
A nice book to read though it is difficult to look up individual plants since the book is divided into separate sections dealing with the different medicinal uses plus a section on edible plants. Common names are used instead of botanical.
[222] Foster. S. & Duke. J. A. A Field Guide to Medicinal Plants. Eastern and Central N. America. Houghton Mifflin Co. 1990 ISBN 0395467225
A concise book dealing with almost 500 species. A line drawing of each plant is included plus colour photographs of about 100 species. Very good as a field guide, it only gives brief details about the plants medicinal properties.
[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.
[245] Genders. R. Scented Flora of the World. Robert Hale. London. 1994 ISBN 0-7090-5440-8
An excellent, comprehensive book on scented plants giving a few other plant uses and brief cultivation details. There are no illustrations.
[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.
[268] Stuart. M. (Editor) The Encyclopedia of Herbs and Herbalism Orbis Publishing. London. 1979 ISBN 0-85613-067-2
Excellent herbal with good concise information on over 400 herbs.
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