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Aesculus pavia

Common name: Red Buckeye Family: Hippocastanaceae
Author: L. Botanical references: 11, 82, 200
Synonyms:  
Known Hazards: The seed is rich in saponins[169]. Although poisonous, saponins are poorly absorbed by the human body and so most pass through without harm. Saponins are quite bitter and can be found in many common foods such as some beans. They can be removed by carefully leaching the seed or flour in running water. Thorough cooking, and perhaps changing the cooking water once, will also normally remove most of them. However, it is not advisable to eat large quantities of food that contain saponins. 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].
Range: South-eastern N. America - Virginia to Florida, west to Louisiana.
Habitat: Rich moist soils in deciduous woods, on the sides of streams and swamp margins[149, 192, 229].
Edibility Rating (1-5): 3Medicinal Rating (1-5):1

Other Common Names:From various places around the Web, may not be correct. See below.
Buckeye [H], Red Buckeye [P,B,H,L,DEN1],
Systematics:From a USDA Plants Database
Order: Sapindales. Horse-chestnut family

Physical Characteristics

A decidious shrub growing to 5m by 3m at a fast rate. It is hardy to zone 5 and is frost tender. It is in flower in June, and the seeds ripen in September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees. We rate it 3/5 for edibility and 1/5 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 can grow in full shade (deep woodland) semi-shade (light woodland) or no shade. It requires moist soil.

Habitats and Possible Locations

Woodland, Dappled Shade, Shady Edge.

Edible Uses

Seed.

Seed - cooked. It can be dried and ground into a powder and used as a gruel. The seed is quite large, about 25mm in diameter[227], and is easily harvested. Unfortunately, the seed is also rich in saponins and these need to be removed before it can be eaten. See also the notes above on toxicity.

The following notes apply to A. californica, but are probably also relevant here:-

The seed needs to be leached of toxins before it becomes safe to eat - the Indians would do this by slow-roasting the nuts (which would have rendered the saponins harmless) and then cutting them into thin slices, putting them into a cloth bag and rinsing them in a stream for 2 - 5 days[213]. Most of the minerals etc would also have been leached out by this treatment[K].

Medicinal Uses

Disclaimer

Cancer Hypnotic Odontalgic Salve.

The powdered bark is hypnotic and odontalgic. It is used in the treatment of ulcers[149, 192, 227].
A poultice of the powdered seeds has been used in the treatment of cancer tumours and infections, and as a salve for sores[257].
An infusion of the roots has been used as a bath in the treatment of dyspepsia[257].

Other Uses

Soap Wood.

Saponins in the seed and roots are a soap substitute[149, 169]. The saponins can be easily obtained by chopping the seed into small pieces and infusing them in hot water. This water can then be used for washing the body, clothes etc. Its main drawback is a lingering odour of horse chestnuts[K].

Cultivation details

Prefers a deep loamy well-drained soil but is not too fussy[1, 11]. Very shade tolerant, it also succeeds in a sunny position[200].
A very ornamental shrub, when dormant it is hardy to about -15° c[184] though the young growth in spring can be damaged by late frosts. It prefers a continental climate, growing best in eastern and south-eastern England[200].
Trees are fast-growing in the wild, though they are also short-lived[229]. They can commence flowering when only 1 metre tall[229]. Plants spread by means of suckers[200].
There are a number of named varieties, developed for their ornamental value. Var. 'Humilis' is a low growing form[182].
Most members of this genus transplant easily, even when fairly large[11].

Propagation

Seed - best sown outdoors or in a cold frame as soon as it is ripe[11, 80]. The seed germinates almost immediately and must be given protection from severe weather[130]. The seed has a very limited viability and must not be allowed to dry out. Stored seed should be soaked for 24 hours prior to sowing and even after this may still not be viable[80, 113]. It is best to sow the seed with its 'scar' downwards[130]. If sowing the seed in a cold frame, pot up the seedlings in early spring and plant them out into their permanent positions in the summer.
Division of suckers in the dormant season[200]. The suckers can be planted out straight into their permanent positions if required.

Cultivars

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No entries have been made for this species as yet.

Suppliers

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

Web References

References for the family Hippocastanaceae.

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.

[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]).

[11] Bean. W. Trees and Shrubs Hardy in Great Britain. Vol 1 - 4 and Supplement. Murray 1981
A classic with a wealth of information on the plants, but poor on pictures.

[80] McMillan-Browse. P. Hardy Woody Plants from Seed. Grower Books 1985 ISBN 0-901361-21-6
Does not deal with many species but it is very comprehensive on those that it does cover. Not for casual reading.

[82] Sargent. C. S. Manual of the Trees of N. America. Dover Publications Inc. New York. 1965 ISBN 0-486-20278-X
Two volumes, a comprehensive listing of N. American trees though a bit out of date now. Good details on habitats, some details on plant uses. Not really for the casual reader.

[113] Dirr. M. A. and Heuser. M. W. The Reference Manual of Woody Plant Propagation. Athens Ga. Varsity Press 1987 ISBN 0942375009
A very detailed book on propagating trees. Not for the casual reader.

[130] ? The Plantsman. Vol. 4. 1982 - 1983. Royal Horticultural Society 1982
Excerpts from the periodical giving cultivation details and other notes on some of the useful plants, including Distylium racemosum and some perennial members of the family Berberidaceae.

[149] Vines. R. A. Trees of Central Texas. University of Texas Press 1987 ISBN 0-292-78958-3
Fairly readable, it gives details of habitats and some of the uses of trees growing in Texas.

[169] Buchanan. R. A Weavers Garden.
Covers all aspects of growing your own clothes, from fibre plants to dyes.

[182] Thomas. G. S. Ornamental Shrubs, Climbers and Bamboos. Murray 1992 ISBN 0-7195-5043-2
Contains a wide range of plants with a brief description, mainly of their ornamental value but also usually of cultivation details and varieties.

[184] Phillips. R. & Rix. M. Shrubs. Pan Books 1989 ISBN 0-330-30258-2
Excellent photographs and a terse description of 1900 species and cultivars.

[192] Emboden. W. Narcotic Plants Studio Vista 1979 ISBN 0-289-70864-8
A lot of details about the history, chemistry and use of narcotic plants, including hallucinogens, stimulants, inebriants and hypnotics.

[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.

[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.

[227] Vines. R.A. Trees of North Texas University of Texas Press. 1982 ISBN 0292780206
A readable guide to the area, it contains descriptions of the plants and their habitats with quite a bit of information on plant uses.

[229] Elias. T. The Complete Trees of N. America. Field Guide and Natural History. Van Nostrand Reinhold Co. 1980 ISBN 0442238622
A very good concise guide. Gives habitats, good descriptions, maps showing distribution and a few of the uses. It also includes the many shrubs that occasionally reach tree proportions.

[257] Moerman. D. Native American Ethnobotany Timber Press. Oregon. 1998 ISBN 0-88192-453-9
Very comprehensive but terse guide to the native uses of plants. Excellent bibliography, fully referenced to each plant, giving a pathway to further information. Not for the casual reader.


Readers Comments

Aesculus flava

Mike Creel (creelm@scdnr.state.sc.us) Tue Oct 26 20:14:56 1999

Rich, I e-mailed you area about the toxicity of buckeyes. Dr. Duke is an authority in this area. This information should be useful to you.

From: Jim Duke[SMTP:jimduke@cpcug.org]

> Hi Mike being as sweet as dosen't make it edible.

> I have for the first time in my life a chestnut and a horsechestnut (really I'm growin a local ornamental Aesculus which set seed). harvested in my own yard. I won't eat but one of them.

> I treat all Aesculus as poisonous and think the europeans who are selling horse chestnut are downplaying the poisonous natures.

Note from Rich: detailed information on the active ingredients of this plant have been snipped. You can detailed info at Ethnobotany Database or one of the other online database mentioned above.

Cross references: Plants: Aesculus flava. Genera: Aesculus. Web-pages: PFAF: Edible Trees and Shrubs Hardy in Britain: A-B.



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