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Zizania latifolia

Common name:	Manchurian Wild Rice	Family:	Gramineae
Author:	(Griseb.)Turcz. ex Stapf.	Botanical references:	200, 266
Synonyms:	Zizania caduciflora (Hand.-Mazz.)
Known Hazards:	None known
Range:	E. Asia - China, Japan, Manchuria.
Habitat:	Swamps marshes etc in running or stagnant shallow water[1, 136]. Shallow water of lake margins and swamps, often forming large patches[266].
Edibility Rating (1-5):	4	Medicinal Rating (1-5):	1

Other Possible Synonyms:	From various places across the web, may not be correct. See below.
	Hydropyrum latifolium[G]
Other Common Names:	From various places around the Web, may not be correct. See below.
	Manchurian Wildrice [P],
Epithets:	From a Dictionary of Botanical Epithets
	latifolia = broad leaved;
Systematics:	From a USDA Plants Database
	Order: Cyperales. Renamed to Poaceae -- Grass family
Other Range Info:	From the Ethnobotany Database
	China

Physical Characteristics

Perennial growing to 3.5m. It is hardy to zone 9. It is in flower from July to September, and the seeds ripen from July to September. The flowers are hermaphrodite (have both male and female organs). We rate it 4/5 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 can grow in semi-shade (light woodland) or no shade. It can grow in water.

Habitats and Possible Locations

Pond.

Cultivar 'So Zhou': Pond.

Edible Uses

Flowers; Root; Seed; Stem.

The swollen stem bases, infected with the smut fungus Ustilago esculenta, are eaten as a vegetable by the Chinese[1, 74, 105]. They must be harvested before the fungus starts to produce spores since the flesh deteriorates at this time[206]. They are parboiled then sautéed with other vegetables and have a nutty flavour reminiscent of coconut[183]. The wild forms of this species have developed resistance to the smut, so specially disease-susceptible cultivars are grown[206].
Seed - cooked[1, 74, 136]. It can be used like rice in sweet or savoury dishes[183]. The seed can also be ground into a flour and used in making cakes, biscuits etc[K]. The seed contains about 13.7% protein, 0.9% fat, 72.7% carbohydrate, 0.7% ash[179].
Young inflorescences - cooked and used as a vegetable[183].
Young shoots - raw or cooked[46, 136, 178]. A pleasant sweet taste[74]. The shoots contain about 1% protein, 0.3% fat, 4.7% carbohydrate, 0.7% ash[179].
Root[1, 74]. No more details.

Medicinal Uses

Disclaimer

Diuretic; Febrifuge; Tonic.

The shoots, roots and the seed are diuretic and febrifuge[178, 218].
The leaves are tonic[218].

Other Uses

Weaving.

The leaves are woven into mats[1, 46, 61].

Cultivation details

A marsh or water plant requiring shallow stagnant or slowly flowing water, it is easily grown in most soils in a sunny position[136]. Prefers a slightly acidic clay-loam soil[206].
One report suggests that the plant is in hardiness zone 9 (only tolerating light frosts)[200] but this is rather questionable, there are several reports of the plant being perfectly hardy in Britain, though it does not usually flower in this country[136]. It requires hot summers with temperatures between 20 - 30°c if it is to do well[206].
It is often cultivated as a food crop in E. Asia and is often grown as cover for wild fowl along the sides of lakes in Britain[136]. It grows very well at Kew[136].

Propagation

Seed - it must not be allowed to dry out or it will quickly lose its viability, usually within 4 weeks[136]. Store collected seed in jars of water in a cool place such as the salad compartment of a fridge. Sow the seed in a greenhouse in spring. Immerse the pots so that they are covered by about 5cm of water. When they are large enough to handle, prick the seedlings out into individual pots and grow them on in the greenhouse for their first winter. Plant them out into their permanent positions in late spring or early summer, after the last expected frosts.
Division in spring. Larger divisions can be planted out direct into their permanent positions. We have found that it is best to pot up smaller divisions and grow them on in light shade in a greenhouse or cold frame until they are growing away well. Plant them out in the summer or the following spring.

Cultivars

'So Zhou': An early cultivar with tender flesh[183].

Suppliers

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

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

References for Zizania caduciflora (a possible synonym).

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

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]).

[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.

[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.

[74] Komarov. V. L. Flora of the USSR. Israel Program for Scientific Translation 1968
An immense (25 or more large volumes) and not yet completed translation of the Russian flora. Full of information on plant uses and habitats but heavy going for casual readers.

[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.

[136] Royal Botanic Gardens, Kew. Kew Bulletin. 1909 Royal Botanic Gardens, Kew. 1909
An interesting article on growing wild rice, Zizania aquatica and Z. latifolia.

[178] Stuart. Rev. G. A. Chinese Materia Medica. Taipei. Southern Materials Centre
A translation of an ancient Chinese herbal. Fascinating.

[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.

[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.

[206] Larkcom J. Oriental Vegetables John Murray 1991 ISBN 0-7195-4781-4
Well written and very informative.

[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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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
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