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Useful Temperate Plants

Pediomelum pentaphyllum

(L.) Rydb.

Fabaceae

+ Synonyms

Psoralea pentaphylla L.

Lotodes pentaphylla (L.) Kuntze

Pediomelum trinervatum Rydb.

Psoralea trinervata (Rydb.) Standl.

Common Name: Small Indian Breadroot

No Image.

General Information

Pediomelum pentaphyllum is a herbaceous perennial plant growing from a subglobose tuber 15 - 20mm thick. The plant branches at the base; the stems are trailing to decumbent, around 10 - 30cm long.
The plant is harvested from the wild for local use as a medicine.

Known Hazards

Although no specific mention of toxicity for this species has been found, at least some members of this genus are known to contain furanocoumarins, particularly psoralen and angelicin. These compounds can be found in low concentrations in many common foods including citrus fruirs, celery, parsley and parsnips. Ingestion or skin application of these compounds in larger quantities can cause skin photosensitization followed by hyperpigmentation[
65
Title
A Colour Atlas of Poisonous Plants.
Publication
 
Author
Frohne. D. and Pfänder. J.
Publisher
Wolfe
Year
1984
ISBN
0723408394
Description
Brilliant. Goes into technical details but in a very readable way. The best work on the subject that I've come across so far.
,
1572
Title
Furocoumarins and Other Secondary Metabolites from Psoralea canescens
Publication
International Journal of Pharmacognosy, 1997, Vol 35, 4 pp 232-236
Author
Innocenti G.; Bourgaud F.; Piovan A. & Favretto D.
Publisher
 
Year
1997
ISBN
0925-1618
Description
 
].

Botanical References


Range

Southern N. America - Arizona to Texas, through northern and central Mexico to Jalisco and Guanajuato

Habitat

Desert grassland or desert scrub among creosote bush or mesquite in sandy or gravelly loam soils; at elevations from 1,350 - 2,000 metres

Properties

Medicinal Rating *  *  *
HabitPerennial
Height0.20 m
PollinatorsBees, Insects
Cultivation StatusWild

Cultivation Details

Pediomelum pentaphyllum is found from the warm temperate regions of southern USA to the tropical zone of central Mexico. It can be found growing in semi-arid areas in the north of its range, where it can experience frosts, to tropical deciduous forests in the south, where mean annual rainfall can be around 2,050mm[
1565
Title
Biblioteca Digital de la Medicina Tradicional Mexicana
Publication
 
Author
 
Website
http://www.medicinatradicionalmexicana.unam.mx/index.php
Publisher
 
Year
0
ISBN
 
Description
A very valuable on-line resource with detailed information on many hundreds of medicinal plants used in Mexico
].
Species in this genus generally require a well-drained soil in a sunny position, succeeding in most soils[
1
Title
RHS Dictionary of Plants plus Supplement. 1956
Publication
 
Author
F. Chittendon.
Publisher
Oxford University Press
Year
1951
ISBN
-
Description
Comprehensive listing of species and how to grow them. Somewhat outdated, it has been replaced in 1992 by a new dictionary (see [200]).
,
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Plants are very intolerant of root disturbance, they are best planted out into their permanent positions whilst still small[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
This species has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].

Edible Uses

None known

Medicinal

The root is antiperiodic, antipyretic and astringent. It used in the treatment of high blood pressure, malaria and fevers, and is chewed as a remedy for tooth decay[
580
Title
Effect of plants used in Mexico to treat gastrointestinal disorders on charcoal-gum acacia-induced hyperperistalsis
Publication
 
Author
Calzada F.; Arista R.; Perez H.
Publisher
Journal of Ethnopharmacology
Year
2010
ISBN
 
Description
A study of 28 plant extracts and their effectiveness in treating diarrhoea and dysentery.
,
1565
Title
Biblioteca Digital de la Medicina Tradicional Mexicana
Publication
 
Author
 
Website
http://www.medicinatradicionalmexicana.unam.mx/index.php
Publisher
 
Year
0
ISBN
 
Description
A very valuable on-line resource with detailed information on many hundreds of medicinal plants used in Mexico
].

A decoction of the plant (part not specified) is used in the treatment of stomach disorders[
1565
Title
Biblioteca Digital de la Medicina Tradicional Mexicana
Publication
 
Author
 
Website
http://www.medicinatradicionalmexicana.unam.mx/index.php
Publisher
 
Year
0
ISBN
 
Description
A very valuable on-line resource with detailed information on many hundreds of medicinal plants used in Mexico
].
The stem bark is astringent and has been used to treat diarrhoea in children[
1565
Title
Biblioteca Digital de la Medicina Tradicional Mexicana
Publication
 
Author
 
Website
http://www.medicinatradicionalmexicana.unam.mx/index.php
Publisher
 
Year
0
ISBN
 
Description
A very valuable on-line resource with detailed information on many hundreds of medicinal plants used in Mexico
].

The roots contain the alkaloid psoralin, an essential oil, an acid resin and colouring matter[
580
Title
Effect of plants used in Mexico to treat gastrointestinal disorders on charcoal-gum acacia-induced hyperperistalsis
Publication
 
Author
Calzada F.; Arista R.; Perez H.
Publisher
Journal of Ethnopharmacology
Year
2010
ISBN
 
Description
A study of 28 plant extracts and their effectiveness in treating diarrhoea and dysentery.
,
1565
Title
Biblioteca Digital de la Medicina Tradicional Mexicana
Publication
 
Author
 
Website
http://www.medicinatradicionalmexicana.unam.mx/index.php
Publisher
 
Year
0
ISBN
 
Description
A very valuable on-line resource with detailed information on many hundreds of medicinal plants used in Mexico
]..
The roots have been shown to be an effective febrifuge[
1565
Title
Biblioteca Digital de la Medicina Tradicional Mexicana
Publication
 
Author
 
Website
http://www.medicinatradicionalmexicana.unam.mx/index.php
Publisher
 
Year
0
ISBN
 
Description
A very valuable on-line resource with detailed information on many hundreds of medicinal plants used in Mexico
].

Other Uses

None known

Propagation

Pre-soak the seed for 24 hours in warm water, ensuring the seed has swollen before sowing.
Sowing outdoors in situ is probably the safest way to start this plant off. If doing this, and seed stocks are in short supply, sow the seed in early spring around 5 - 10mm deep and place a moderate sized clear glass or plastic jar over the seed to help protect it from predation. Remove the jar once the plant is growing well.
Alternatively, sow the soaked seed in early to mid spring in a greenhouse. Either sow the seed in individual pots or pot up the young seedlings as soon as possible in order to avoid root disturbance. Grow them on in the pots until planting out in their final positions. It is usually impossible to transplant this species without fatal damage to the root[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Division in spring. With great care since the plant resents root disturbance. It is virtually impossible to divide this species successfully[
200
Title
The New RHS Dictionary of Gardening. 1992.
Publication
 
Author
Huxley. A.
Publisher
MacMillan Press
Year
1992
ISBN
0-333-47494-5
Description
Excellent and very comprehensive, though it contains a number of silly mistakes. Readable yet also very detailed.
].
Cite as: Temperate Plants Database, Ken Fern. temperate.theferns.info. 2019-11-21. <temperate.theferns.info/plant/Pediomelum+pentaphyllum>

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