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Fagopyrum dibotrys

Common name:	Perennial Buckwheat	Family:	Polygonaceae
Author:	(D.Don.)Hara.	Botanical references:	51, 266
Synonyms:	Polygonum dibotrys (D.Don.), Polygonum chinense (Misapplied), Fagopyrum cymosum ((Trevir.)Meissn.)
Known Hazards:	None known
Range:	E. Asia - China, Japan, Himalayas.
Habitat:	Forests and cultivated areas from Pakistan to S.W. China, 1500 - 3400 metres[51]. Found alongside ditches on shady damp and fertile soils in China[147].
Edibility Rating (1-5):	4	Medicinal Rating (1-5):	2

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	Pleuropteus convolvulus[H] Pleuropteus cordatus[H] Polygonum multiflorum[E,G,H,HORTIPLEX]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Ch'Ih Ti Li [E], Chinese Knotweed [B,P], Ho Chou Wu [E], Ho Shou Wu [E], Pokok Semuloh [E], Shan Ch'Iao Mai [E], She Chien Ts'Ao [E], Turu-Dokudami [E],
Epithets:	From a Dictionary of Botanical Epithets
	botrys = grape
Systematics:	From a USDA Plants Database
	Order: Polygonales. Buckwheat family
Other Range Info:	From the Ethnobotany Database
	China India Japan Java Malaya

Physical Characteristics

Perennial growing to 1m by 2m at a fast rate. It is frost tender. It is in flower in September. 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 Bees and flies. We rate it 4/5 for edibility and 2/5 for medicinal use.

The plant prefers light (sandy), medium (loamy) and heavy (clay) soils, requires well-drained soil and can grow in heavy clay and nutritionally poor soils. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in semi-shade (light woodland) or no shade. It requires dry or moist soil.

Habitats and Possible Locations

Woodland, Cultivated Beds, Sunny Edge, Dappled Shade.

Edible Uses

Leaves Rutin Seed.

Leaves - raw or cooked[105, 160, 272]. Boiled or steamed and used like spinach[183]. Of excellent quality according to one report[2], but we have been less than impressed by the flavour, which has a distinct bitterness especially when eaten raw[K]. The leaves are rich in rutin (see below for details of its uses) and so they do make a healthy addition to the diet[K].
Seed - it can be sprouted and eaten raw, or cooked and used as a cereal[4]. Dried and ground into a powder, it can serve as a thickening agent in soups etc. The seed is rich in vitamin B6. Unfortunately, it is not freely produced in Britain[2].

Medicinal Uses

Disclaimer

Anodyne Anthelmintic Antiinflammatory Antiphlogistic Antispasmodic Cancer Carminative Depurative Febrifuge Hypotensive.

The whole plant is anodyne, anthelmintic, antiphlogistic, carminative, depurative and febrifuge. It stimulates blood circulation[147]. A decoction is used in the treatment of traumatic injuries, lumbago, menstrual irregularities, purulent infections, snake and insect bites[147].
A decoction of the roots is used in the treatment of insect bites, dysmenorrhoea, inflammation, lumbago, snakebite and traumatic injuries[218].
The leaves are rich in rutin which is a capillary tonic, antioedemic, anti-inflammatory, antispasmodic and hypotensive[218]. Rutin also inhibits carcinogenesis and protects against radiation[218].

Other Uses

None known

Cultivation details

A very tolerant and easily grown plant, it prefers dry sandy soils but succeeds in most conditions including poor, heavy or acid soils and even sub-soils. Prefers a good soil in partial shade[187], growing very well in woodland conditions[K].
The dormant plant is hardy to about -20° c[187], though the growing plant is frost tender[K]. It is often excited into growth quite early in the year if the weather is mild, and will then be cut back by the first frost. It usually regrows quickly from the base[K].
Perennial buckwheat is occasionally cultivated for its edible seed, though this is not produced as abundantly as in the annual members of this genus[K]. Our plants flower in late summer and early autumn, and have not as yet produced any seed. Since all our plants come originally from one seedling, it is quite possible that the plant is self-sterile[K].
There is at least one named variety, selected for its ornamental value. 'Variegata' has variegated leaves[200].

Propagation

Seed - sow spring in a greenhouse. Prick out the seedlings when they are large enough to handle and plant them out into their permanent positions in the summer.
Division is very easy at almost any time in the growing season, though it is best avoided in early spring because the young growth can be damaged by late frosts. The divisions can be planted out direct into their permanent positions.

Cultivars

'': No entries have been made for this species as yet.

Suppliers

Plants For A Future is working with the following groups to try and make these plants easily available. Parts of the proceeds will be donated to so please mention us when ordering.

Wildwood Nurseries: Lower Manor Cottage
Thornbury
Holsworthy
Devon
EX22 7DD
Email: lorna@macace.co.uk
Phone 01409 261324 Fax 01409 261324
Distribution: UK
How to order: Direct from Wildwood by email/phone
Last Updated: March 03
Item: Fagopyrum dibotrys (perennial buckwheat)

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

PFAF Web Pages

This plant is mentioned in the following web pages

Web References

Details of Medicinal Uses, Habitats, etc. in M. Grieve A Modern Herbal (1931) [4]
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for Fagopyrum cymosum (a possible synonym).

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

References for Polygonum chinense (a possible synonym).

[H] Details of Scandanavian and European Common names in Henriette's names database
[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.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.

References for Polygonum multiflorum (a possible synonym).

[H] Details of Scandanavian and European Common names in Henriette's names database
[E] Ethnobotany Data (common names, uses, countries) from the Ethnobotany Database.
[G] Data (Common Names, Uses, Distribution) from the USDA/ARS NPGS's GRIN taxonomic database.
[PHARM] Phytochemical Data (common names, uses, countries) from Dr Duke's Phytochemical Database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for the family Polygonaceae.

[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.

[51] Polunin. O. and Stainton. A. Flowers of the Himalayas. Oxford Universtiy Press 1984
A very readable and good pocket guide (if you have a very large pocket!) to many of the wild plants in the Himalayas. Gives many examples of plant uses.

[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.

[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.

[160] Natural Food Institute, Wonder Crops. 1987.
Fascinating reading, this is an annual publication. Some reports do seem somewhat exaggerated though.

[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.

[187] Phillips. R. & Rix. M. Perennials Volumes 1 and 2. Pan Books 1991 ISBN 0-330-30936-9
Photographs of over 3,000 species and cultivars of ornamental plants together with brief cultivation notes, details of habitat etc.

[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.

[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.

[266] Flora of China 1994
On-line version of the Flora - an excellent resource giving basic info on habitat and some uses.

Readers Comments

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