Psoralea orbicularis Roundleaf Leather Root PFAF Plant Database

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Summary

Physical Characteristics

Psoralea orbicularis is a PERENNIAL growing to 0.1 m (0ft 4in) by 0.6 m (2ft).
See above for USDA hardiness. It is hardy to UK zone 6. The species is hermaphrodite (has both male and female organs) and is pollinated by Insects.
It can fix Nitrogen.
Suitable for: light (sandy), medium (loamy) and heavy (clay) soils and prefers well-drained soil. Suitable pH: mildly acid, neutral and basic (mildly alkaline) soils. It cannot grow in the shade. It prefers dry or moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

Hoita orbicularis. (Lindl.)Rydb.

Plant Habitats

Cultivated Beds;

Edible Uses

Edible Parts: Leaves
Edible Uses:

Leaves - cooked[105, 161, 257].

References More on Edible Uses

Medicinal Uses

Plants For A Future can not take any responsibility for any adverse effects from the use of plants. Always seek advice from a professional before using a plant medicinally.
Blood purifier Febrifuge

A decoction of the root used as a blood purifier and in the treatment of fevers[257].

References More on Medicinal Uses

Other Uses

Soil stabilization

The plant is a good soil stabilizer in its natural environment[200].

Special Uses

Nitrogen Fixer

References More on Other Uses

Cultivation details

Succeeds in an ordinary garden soil[1]. We have very little information on this species but it is growing at Kew in the system beds and seems to be thriving there[K]. Plants are very intolerant of root disturbance, they are best planted out into their permanent positions whilst still small[200]. 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].

References Carbon Farming Information and Carbon Sequestration Information

Temperature Converter

Type a value in the Celsius field to convert the value to Fahrenheit:

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Plant Propagation

Pre-soak the seed for 24 hours in warm water and then sow 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]. Division in spring. With great care since the plant resents root disturbance. It is virtually impossible to divide this species successfully[200].

Other Names

If available other names are mentioned here

Native Range

NORTHERN AMERICA: United States (California), Mexico (Baja California (Norte) (north))

Weed Potential

Right plant wrong place. We are currently updating this section. Please note that a plant may be invasive in one area but may not in your area so it's worth checking.

Conservation Status

IUCN Red List of Threatened Plants Status :

IUCN Red List

Related Plants

Latin Name	Common Name	Habit	Height	Hardiness	Soil	Shade	Moisture	Edible	Medicinal	Other
Psoralea argophylla	Silverleaf Scurf Pea	Perennial	0.6	4-8	LMH	N	DM	2	1	2
Psoralea californica	California Indian breadroot	Perennial	0.2	0-0	LMH	N	DM	2	0	2
Psoralea canescens	Buckroot	Perennial	0.0	-	LM	N	DM	2	1	2
Psoralea castorea	Beaver Indian breadroot	Perennial	0.1	4-8	LM	N	DM	4	0	2
Psoralea corylifolia	Bu Gu Zhi	Annual	0.6	-	LMH	N	M	1	4
Psoralea cuspidata	Indian Breadroot, Largebract Indian breadroot	Perennial	0.6	0-0	LM	N	DM	2	0	2
Psoralea esculenta	Breadroot, Large Indian breadroot	Perennial	0.3	4-8	LMH	N	DM	5	1	3
Psoralea glandulosa	Culen	Shrub	3.0	8-11	LMH	N	M	3	1
Psoralea hypogaea	Small Indian Breadroot	Perennial	0.1	4-8	LM	N	DM	4	0	2
Psoralea lanceolata	Lemon scurfpea	Perennial	0.6	0-0	LM	N	DM	2	0	2
Psoralea macrostachya	Large Leather Root	Perennial	1.0	0-0	LMH	N	M	2	1	2
Psoralea mephitica		Perennial	0.0	-	LMH	N	DM	2	0	2
Psoralea pedunculata	Sampson's Snakeroot	Perennial	1.0	-	LMH	N	DM	0	1
Psoralea subacaulis	Whiterim scurfpea	Perennial	0.2	0-0	LMH	N	DM	2	0	2
Psoralea tenuiflora	Slender Scurfy Pea, Slimflower scurfpea	Perennial	1.0	0-0	LMH	N	DM	2	0	2

Growth: S = slow M = medium F = fast. Soil: L = light (sandy) M = medium H = heavy (clay). pH: A = acid N = neutral B = basic (alkaline). Shade: F = full shade S = semi-shade N = no shade. Moisture: D = dry M = Moist We = wet Wa = water.

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Expert comment

Author

Lindl.

Botanical References

Links / References

For a list of references used on this page please go here

Psoralea orbicularis - Lindl.