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Lycium torreyi

Common name:	Squawthorn	Family:	Solanaceae
Author:	A.Gray.	Botanical references:	71
Synonyms:
Known Hazards:	Although no records of toxicity have been seen for this species, it does belong to a family that contains many poisonous plants. Some caution should be applied, especially towards leaves or unripe fruits, though ripe fruits are almost certainly edible.
Range:	South-western N. America - California.
Habitat:	Along washes and bench lands below 600 metres, especially in creosote bush scrub[71].
Edibility Rating (1-5):	2	Medicinal Rating (1-5):	2

Other Common Names:	From various places around the Web, may not be correct. See below.
	Squawthorn [B,P], Torrey Wolfberry [FEIS],
Systematics:	From a USDA Plants Database
	Order: Solanales. Potato family

Physical Characteristics

A decidious shrub growing to 3m. . The flowers are hermaphrodite (have both male and female organs) and are pollinated by Bees. We rate it 2/5 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 nutritionally poor soil. The plant prefers acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It requires dry or moist soil. The plant can tolerate maritime exposure.

Habitats and Possible Locations

Woodland, Sunny Edge.

Edible Uses

Fruit.

Fruit - raw or cooked[257]. It is much sought after in the wild[177]. Only the fully ripe fruits should be eaten[K].

Medicinal Uses

Disclaimer

Cancer Odontalgic.

A poultice of the heated root has been applied to the jaw to bring relief from toothache[257].
The plant has been used as a treatment for chickenpox[257].
The fruit of many members of this genus is a very rich source of vitamins and minerals, especially in vitamins A, C and E, flavanoids and other bio-active compounds. It is also a fairly good source of essential fatty acids, which is fairly unusual for a fruit. It is being investigated as a food that is capable of reducing the incidence of cancer and also as a means of halting or reversing the growth of cancers[214].

Other Uses

Soil stabilization.

Plants have an extensive root system and can be planted to stabilize banks[200].

Cultivation details

We have very little information on this species and do not know if it will be hardy in Britain, though judging by its native range it might succeed outdoors in the mildest areas of this country. The following notes are based on the general needs of the genus.
Does not require a rich soil, flowering and fruiting better in a well-drained soil of moderate quality[11]. Succeeds in impoverished soils[200]. Requires a sunny position[200]. Tolerates maritime exposure[200].

Propagation

Seed - sow early spring in a greenhouse. Germination is usually good and fairly quick. Prick out the seedlings into individual pots when they are large enough to handle and grow them on in the greenhouse for their first winter. Plant out in late spring or early summer. Pinch out the shoot tips of the young plants in order to encourage bushy growth[78].
Cuttings of half-ripe wood, 5 - 10cm with a heel if possible, July/August in individual pots in a frame. Good percentage[78].
Cuttings of mature wood of the current season's growth, autumn to late winter in a cold frame. High percentage[78, 200].
Division of suckers in late winter. Very easy, the suckers can be planted out direct into their permanent positions.
Layering.

Suppliers

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

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.
[C] Taxon data. from the CalFlora database.
[P] Data. (uses, distribution, wetland) from the USDA'a Plants database.
[HP] Links, Photos, Suppliers from Hortiplex Plant Database
[FEIS] Data (Uses, Ecology, Fire Effects) from the USDA Forestry Service Fire Effects Information System.

References for the family Solanaceae.

[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

[K] Ken Fern
Notes from observations, tasting etc at Plants For A Future and on field trips.

[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.

[71] Munz. A California Flora. University of California Press 1959
An excellent flora but no pictures. Not for the casual reader.

[78] Sheat. W. G. Propagation of Trees, Shrubs and Conifers. MacMillan and Co 1948
A bit dated but a good book on propagation techniques with specific details for a wide range of plants.

[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.

[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.

[214] Matthews. V. The New Plantsman. Volume 1, 1994. Royal Horticultural Society 1994 ISBN 1352-4186
A quarterly magazine, it has articles on Himalayacalamus hookerianus, hardy Euphorbias and an excellent article on Hippophae spp.

[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

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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
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