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Lathyrus polymorphus - Nutt.

Common Name Manystem Peavine, Hoary pea
Family Fabaceae or Leguminosae
USDA hardiness Coming soon
Known Hazards Although no records of toxicity have been found for this plant, the seed of some species in this genus contain a toxic amino acid that can cause a severe disease of the nervous system known as 'lathyrism' if they are eaten in large amounts (although small quantities are said to be nutritious)[65, 76]. Great caution is advised.
Habitats Hillsides and open places in western S. Dakota.
Range Western N. America - Idaho and Colorado to Arizona and New Mexico.
Edibility Rating    (1 of 5)
Other Uses    (0 of 5)
Weed Potential No
Medicinal Rating    (0 of 5)
Care
Moist Soil Full sun
Lathyrus polymorphus Manystem Peavine, Hoary pea


Lathyrus polymorphus Manystem Peavine, Hoary pea

 

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Summary


Physical Characteristics

 icon of manicon of flower
Lathyrus polymorphus is a PERENNIAL growing to 0.4 m (1ft 4in). It is in flower from June to July, and the seeds ripen from July to August. 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. Suitable pH: acid, neutral and basic (alkaline) soils. It cannot grow in the shade. It prefers moist soil.

UK Hardiness Map US Hardiness Map

Synonyms

L. decaphyllus.

Habitats

 Cultivated Beds;

Edible Uses

Edible Parts: Seedpod
Edible Uses:

Seedpods and seeds[46, 61, 105, 257]. No more details are given.

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.


None known

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Other Uses

None known

Special Uses

Nitrogen Fixer

Cultivation details

We have very little information on this species and do not know if it will be hardy in Britain. The following notes are based on the general needs of the genus. An easily grown plant, succeeding in any moderately good garden soil but preferring a position in full sun[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].

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Propagation

Pre-soak the seed for 24 hours in warm water and then sow in early spring in a cold frame[200]. When they are large enough to handle, prick the seedlings out into individual pots and plant them out in the summer. If you have sufficient seed, then it can also be sown in situ in mid spring[200]. Division in spring. It may not transplant well so care should be taken[200].

Other Names

If available other names are mentioned here

Found In

Countries where the plant has been found are listed here if the information is available

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 :

Related Plants
Latin NameCommon NameHabitHeightHardinessGrowthSoilShadeMoistureEdibleMedicinalOther
Lathyrus alatus Perennial0.6 -  LMHSNM10 
Lathyrus aphacaYellow-Flowered PeaAnnual0.9 -  LMHNDM11 
Lathyrus ciceraChickling Vetch, Red peaAnnual0.0 0-0  LMHNM10 
Lathyrus davidii Perennial1.2 5-9  LMHSNM10 
Lathyrus japonicusBeach Pea, Smallflower beach peaPerennial0.6 3-7  LMHNDM20 
Lathyrus japonicus maritimusBeach PeaPerennial0.6 3-7  LMHNDM200
Lathyrus latifoliusPerennial Sweet Pea, Perennial peaPerennial Climber2.0 5-9 FLMHSNDM102
Lathyrus linifolius montanusBitter VetchPerennial0.6 5-9  LMHSNM200
Lathyrus nervosusLord Anson's PeaPerennial Climber0.5 8-11  LMHNM20 
Lathyrus ochroleucasCream PeavinePerennial1.0 -  LMHSNM11 
Lathyrus ochrusCyprus VetchAnnual0.6 -  LMHNDM10 
Lathyrus odoratusSweet Pea, Wild Pea,VetchlingAnnual Climber2.0 0-0 FLMHSNM10 
Lathyrus ornatusBush VetchlingPerennial0.3 3-7  LMHNDM11 
Lathyrus palustrisSlenderstem Peavine, Marsh peaPerennial Climber1.2 4-8  LMHNMWe10 
Lathyrus pratensisMeadow VetchlingPerennial1.2 4-8  LMHNMWe01 
Lathyrus quinquenervius Perennial0.6 -  LMHNMWe10 
Lathyrus sativusChickling Pea, White peaAnnual0.6 0-0  LMHNM21 
Lathyrus tuberosusEarthnut Pea, Tuberous sweetpeaPerennial1.2 5-9  LMHSNM50 

 

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Expert comment

Author

Nutt.

Botanical References

235

Links / References

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