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Calystegia pubescens

Common name:	Japanese Bindweed	Family:	Convolvulaceae
Author:	Lindl.	Botanical references:	1, 58, 266
Synonyms:	Calystegia subvolubilis (non Don.), Calystegia japonica (Choisy.)
Known Hazards:	This species is said to be purgative[173], some caution is advised.
Range:	E. Asia - China, Japan, Korea.
Habitat:	Sunny grassy places and thickets in lowland all over Japan[58].
Edibility Rating (1-5):	1	Medicinal Rating (1-5):	1

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	C. pellita[B,P] Convolvulus japonicus[B,P] Convolvulus pellitus[B,P]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Calystegia [P], Hairy False Bindweed [B],
Epithets:	From a Dictionary of Botanical Epithets
	pubescens = becoming hairy;
Systematics:	From a USDA Plants Database
	Order: Solanales. Morning-glory family

Physical Characteristics

Perennial Climber growing to 3m. It is hardy to zone 4. It is in flower from July to September. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees and Lepidoptera (Moths & Butterflies). We rate it 1/5 for edibility and 1/5 for medicinal use.

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

Habitats and Possible Locations

Woodland, Dappled Shade.

Edible Uses

Leaves; Root.

Root - cooked[105, 177, 179]. Said to be purgative[179].
Young shoots - cooked[105, 177, 179].

Medicinal Uses

Disclaimer

Demulcent; Diuretic; Poultice; Tonic.

The flowers are diuretic, they are helpful in cases of diabetes[218].
The plant is demulcent, diuretic and tonic[218]. It is also used as a tonic to correct broken bones and tendons[218].

Other Uses

None known

Cultivation details

Easily grown in ordinary garden soil in a sunny position, but plants are apt to become invasive[1, 200].
Nearly all taxa in Calystegia intergrade geographically into neighboring taxa with the exception of the widespread coastal species, C. soldanella (Linnaeus) R. Brown. It is impossible to draw clearly defined specific limits, and intermediate forms are always found where two taxa approximate geographically[266].

Propagation

Seed - sow spring in a cold frame in a free draining compost and only just cover. The seed usually germinates in 1 - 3 months at 15°c[138]. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in a cold frame 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 whilst dormant[200].

Suppliers

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

Web References

[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.

References for Calystegia pellita (a possible synonym).

[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.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.

References for the family Convolvulaceae.

[CHINA] 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

[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]).

[58] Ohwi. G. Flora of Japan. (English translation) Smithsonian Institution 1965
The standard work. Brilliant, but not for the casual reader.

[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.

[138] Bird. R. (Editor) Growing from Seed. Volume 3. Thompson and Morgan. 1989
Very readable magazine with lots of information on propagation.

[173] Crowe. A. Native Edible Plants of New Zealand. Hodder and Stoughton 1990 ISBN 0-340-508302
A very well written and illustrated book based on the authors own experiments with living on a native diet.

[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.

[179] Reid. B. E. Famine Foods of the Chiu-Huang Pen-ts'ao. Taipei. Southern Materials Centre 1977
A translation of an ancient Chinese book on edible wild foods. Fascinating.

[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

Morning Glory Website

Rich (michael@thewitchshaven.com) Tue Oct 24 09:27:47 2000

An interesting page from a Convolvulaceae enthusiast which features many pictures of the plants and a seed swap area. The page is at http://www.exoticplants.org.uk/.

Cross references: Plants: Calystegia japonica. Genera: Calystegia, Ipomoea, Convolvulus.

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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?Calystegia+pubescens
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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.