We are following the treatment in the USDA 'Plants Database' (https://plants.usda.gov/core/profile?symbol=PEAR6 accessed 02/10/2018). Some other treatments retain this species in Psoralea as Psoralea argophylla Pursh.

Common Name: Silverleaf Scurf Pea

General Information

Pediomelum argophyllum is an erect, widely-branched, herbaceous perennial plant growing from a swollen rootstock; the stems are often zig-zag, they can be 30 - 60cm tall[].
The plant is harvested from the wild for local use as a food, medicine and source of materials. It can be used as a soil stabilizer within its native range.

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[, ].

Botanical References

,

Range

Central N. America - Alberta to Manitoba, south through the central belt to New Mexico, Texas and Oklahoma

Habitat

Dry prairies and plains; at elevations up to 1,500 metres[].

Properties

Edibility Rating
Medicinal Rating
Other Uses Rating
Habit	Perennial
Height	0.50 m
Pollinators	Insects
Cultivation Status	Wild

Cultivation Details

Pediomelum argophyllum is native to the central belt of N. America, from southern Canada toTexas and, as such, will be subject to a continental climate in much of its range with very hot summers and very cold winters.
Species in this genus generally require a well-drained soil in a sunny position, succeeding in most soils[, ].
Plants are very intolerant of root disturbance, they are best planted out into their permanent positions whilst still small[].
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[].

Edible Uses

Root - raw or cooked[, ]. The root can also be dried and ground into a powder then used in soups or with cereals for making bread etc[].

Medicinal

A tea made from the finely ground leaves and stems is used as a febrifuge[].

A decoction of the plant can be used as a wash for wounds[].

An infusion of the root is used to treat chronic constipation[].

Agroforestry Uses:

Valuable under natural conditions as a soil stabilizer[].

Other Uses

The tough green stems can be made into a basket[].

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[].
Division in spring. With great care since the plant resents root disturbance. It is virtually impossible to divide this species successfully[].