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Jeffersonia dubia

Common name:		Family:	Berberidaceae
Author:	(Maxim.)Benth.&Hook.	Botanical references:	200
Synonyms:
Known Hazards:	None known
Range:	E. Asia - N. China to Siberia.
Habitat:	Forests[200].
Edibility Rating (1-5):	0	Medicinal Rating (1-5):	2

Other Common Names:	From various places around the Web, may not be correct. See below.
	Tatuta-So [E],
Epithets:	From a Dictionary of Botanical Epithets
	dubia = dubious;
Systematics:	From a USDA Plants Database
	Order: Ranunculales. Barberry family

Physical Characteristics

Perennial growing to 0.3m by 0.2m at a slow rate. It is hardy to zone 5. It is in flower from May to June. The flowers are hermaphrodite (have both male and female organs). We rate it 0/5 for edibility and 2/5 for medicinal use.

The plant prefers light (sandy) and medium (loamy) soils and requires well-drained soil. The plant prefers acid, neutral and basic (alkaline) soils. It can grow in full shade (deep woodland) or semi-shade (light woodland). It requires moist soil.

Habitats and Possible Locations

Woodland, Dappled Shade, Shady Edge, Deep Shade.

Edible Uses

None known

Medicinal Uses

Disclaimer

Cancer; Febrifuge; Stomachic.

The root is febrifuge and stomachic[218]. It also contains the anti-tumour compound berberine[218].

Other Uses

None known

Cultivation details

Prefers a peaty or woodland soil and a rather shady situation[1, 130]. Suitable for a choice position in a cool leafy soil[187].
This species is hardy to at least -20°c[187].
Plants have an extensive root system and resent disturbance[188]. They should be pot-grown and planted into their permanent positions as soon as possible They should be pot-grown and planted into their permanent positions as soon as possible

Propagation

Seed - best sown as soon as it is ripe in a cold frame[200]. Sow stored seed as soon as possible in late winter or the spring. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for at least their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Division in early spring[200].

Suppliers

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

Web References

[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.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database

References for the family Berberidaceae.

To be included in 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

[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]).

[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.

[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.

[188] Brickell. C. The RHS Gardener's Encyclopedia of Plants and Flowers Dorling Kindersley Publishers Ltd. 1990 ISBN 0-86318-386-7
Excellent range of photographs, some cultivation details but very little information on plant uses.

[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.

Readers Comments

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Bibliography

Plant information taken from the Plants For A Future - Species Database. Copyright (c) 1997-2003.
WEB search engine by Rich Morris - Home Page- Contact Info
Blagdon Cross, Ashwater, Beaworthy, Devon, EX21 5DF, UK.
Website: www.pfaf.org Phone: 0845 458 4719/_44(0) 1208 872963

This page (UK) http://www.comp.leeds.ac.uk/cgi-bin/pfaf/arr_html?Jeffersonia+dubia
This page (US) http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Jeffersonia+dubia

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We make no claims of magical effects or supernatural powers for any item in this catalog. In spite of legendary attributes or occult and craft tradition, such items are offered as curios only and beliefs concerning their magical effectiveness are related only for historical interest.