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Solanum jamesii

Common name:	Colorado Wild Potato	Family:	Solanaceae
Author:	Torr.	Botanical references:	43, 200
Synonyms:
Known Hazards:	Although no specific mention of toxicity has been seen for this species, it belongs to a genus where many if not all the members have poisonous leaves and sometimes also the unripe fruits.
Range:	South-western N. America.
Habitat:	Coniferous forests, 1600 - 2500 metres in Arizona.
Edibility Rating (1-5):	2	Medicinal Rating (1-5):	0

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

Physical Characteristics

Perennial growing to 0.2m. It is hardy to zone 9 and is frost tender. The flowers are hermaphrodite (have both male and female organs) and are pollinated by Insects. We rate it 2/5 for edibility and 0/5 for medicinal use.

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

Habitats and Possible Locations

Cultivated Beds.

Edible Uses

Root.

Tubers - raw or cooked[22, 46, 61, 85, 105, 161]. The tubers are rich in starch but are quite small, averaging only about 3cm in diameter[85, 95]. The tubers range in size from a pea to a walnut[216]. There is a bitterness in the tuber, this is concentrated near the skin[85]. They can be stored for several months or can be sliced thinly, dried and ground into a powder for making bread etc[183, 257]. The Hopi Indians cook them or eat them raw with a saline clay in order to counteract the astringency and also use them in making yeast[183, 257]. The tubers are rather fiddly to harvest, apart from their small size they are also produced at the tips of roots, often at some distance from the parent plant[K].

Medicinal Uses

Disclaimer

None known

Other Uses

None known

Cultivation details

Succeeds in most soils[1]. Dislikes wet or heavy clay soils[16, 37]. Prefers a slightly acid soil, the tubers are subject to scab on limy soils or those deficient in humus. Yields best on a fertile soil rich in organic matter.
Not very hardy in Britain, but plants can be grown as half-hardy perennials, the tubers being planted out in April and harvested in the autumn after the top growth has died down.

Propagation

Seed - sow early spring in a warm greenhouse. Prick out the seedlings into a fairly rich compost as soon as they are large enough to handle and grow them on fast. Plant them out after the last expected frosts.
Division. Harvest the tubers in autumn after the top-growth has been cut back by frost. Store the tubers in a cool frost-free place overwinter and replant in April.

Suppliers

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

Web References

Latin and Worldwide Common Names From Multilingual Multiscript Plant Name Database by M. H. Porcher et. al. 1995 - 2000 Landcare Systems Research Laboratory, Department of Crop Production,Institute of Land and Food Resources, The University of Melbourne, Australia.
[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 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.

[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]).

[16] Simons. New Vegetable Growers Handbook. Penguin 1977 ISBN 0-14-046-050-0
A good guide to growing vegetables in temperate areas, not entirely organic.

[22] Sholto-Douglas. J. Alternative Foods.
Not very comprehensive, it seems more or less like a copy of earlier writings with little added.

[37] Thompson. B. The Gardener's Assistant. Blackie and Son. 1878
Excellent general but extensive guide to gardening practices in the 19th century. A very good section on fruits and vegetables with many little known species.

[43] Fernald. M. L. Gray's Manual of Botany. American Book Co. 1950
A bit dated but good and concise flora of the eastern part of N. America.

[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.

[85] Harrington. H. D. Edible Native Plants of the Rocky Mountains. University of New Mexico Press 1967 ISBN 0-8623-0343-9
A superb book. Very readable, it gives the results of the authors experiments with native edible plants.

[95] Saunders. C. F. Edible and Useful Wild Plants of the United States and Canada. Dover Publications 1976 ISBN 0-486-23310-3
Useful wild plants of America. A pocket guide.

[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.

[161] Yanovsky. E. Food Plants of the N. American Indians. Publication no. 237. U.S. Depf of Agriculture.
A comprehensive but very terse guide. Not for the casual reader.

[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.

[216] Whiting. A. F. Ethnobotany of the Hopi North Arizona Society of Science and Art 1939
A very good guide the the plant uses of the N. American Hopi Indians.

[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

Plant Passporting

Rich (michael@thewitchshaven.com) Wed Sep 26 16:58:15 2001

This information has been taken from DEFRA Guide to Plant Passporting. Which places restrictions on plants which can be traded in the UK and the EU mainly because they are carriers for pests and diseases.

Beta vulgaris (Beet), Chaenomeles (Ornamental quince, Japonica), Citrus (Orange, lemon, lime, grapefruit, etc.), Cotoneaster (Cotoneaster), Crataegus (Hawthorn), Cydonia (Quince), Eriobotrya (Includes loquat), Fortunella and hybrids (Kumquat), Humulus lupulus (Hop (including ornamentals)), Malus (Apple (including ornamentals)), Mespilus (Medlar), Poncirus and hybrids (Ornamental citrus), Prunus (other than Prunus laurocerasus and Prunus lusitanica) (Includes almond, apricot, cherry, damson, greengage, nectarine, peach, plum, sloe and ornamental/flowering varieties), Pyracantha (Firethorn), Pyrus (Pear (including ornamentals)), Solanum (stolon or tuber forming types) (Potato), Sorbus (other than Sorbus intermedia) (Includes rowan and whitebeam), Stranvaesia (Stranvaesia), Vitis (Grape, includes grape vine and ornamental grape).

Many other plants require pasporting for commercial growers, these include Abies, Allium ascalonicum, Allium cepa, Allium porrum, Allium schoenoprasum, Apium graveolens, Plants of the family Araceae, Argyranthemum, Aster, Brassica, Castanea, Capsicum annuum, Cucumis, Dendranthema, Dianthus and hybrids, Euphorbia, Exacum, Fragaria, Gerbera, Gypsophila, Helianthus annuus, Impatiens (all varieties of New Guinea hybrids), Lactuca, Larix, Leucanthemum, Lupinus, Lycopersicon lycopersicum, Plants of the family Marantaceae, Medicago sativa, Plants of the family Musaceae, Nicotiana, Pelargonium, Persea, Phaseolus, Picea, Pinus, Platanus, Populus, Prunus laurocerasus and Prunus lusitanica, Pseudotsuga, Quercus, Rubus, Plants of the family Solanaceae (other than plants of stolon or tuber forming species of Solanum and their hybrids), Solanum melongena, Spinacia, Plants of the family Strelitziaceae, Tanacetum, Tsuga, Verbena.

Cross references: Plants: Beta vulgaris, Humulus lupulus. Genera: Chaenomeles, Citrus, Cotoneaster, Crataegus, Cydonia, Eriobotrya, Fortunella, Malus, Mespilus, Poncirus, Prunus, Pyracantha, Pyrus, Solanum, Sorbus, Stranvaesia, Vitis.

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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?Solanum+jamesii
This page (US) http://www.ibiblio.org/pfaf/cgi-bin/arr_html?Solanum+jamesii

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