Lathyrus polymorphus

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Lathyrus polymorphus
Light:Full Sun
Moisture:Mesic
Soil pH:5.6-8.4
Height:1'
Blooms:Early Summer-Mid Summer
Native to:
Nitrogen Fixer
Edible Rating:PFAF Edibility Rating
Tea:Yes
Poisonous

Lathyrus polymorphus (common name: manystem peavine)

Propagation: Pre-soak the seed for 24 hours in warm water and then sow in early spring in a cold frame[1]. 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[1].

Division in spring. It may not transplant well so care should be taken[1].

Cultivation: 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[1].

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[1].

Range: Western N. America - Idaho and Colorado to Arizona and New Mexico.

Habitat: Hillsides and open places in western S. Dakota.

Edibility: Seedpods and seeds[2][3][4][5]. No more details are given.

Pollinators: Insects

Soil: Can grow in light, medium, and heavy soils.

Seed Ripens: Mid Summer-Late Summer

Flower Type: Hermaphrodite

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

Also Known As: L. decaphyllus.

Links

References

  1. 1.0 1.1 1.2 1.3 1.4 Huxley, Anthony. The New Royal Horticultural Society Dictionary of Gardening. MacMillan Press, 1992.
  2. Uphof, Johannes. Dictionary of Economic Plants. Weinheim, 1959.
  3. Usher, George. A Dictionary of Plants Used by Man. Constable, 1974.
  4. Tanaka, Tyōzaburō. Tanaka's Cyclopaedia of Edible Plants of the World. Keigaku Publishing, 1976.
  5. Moerman, Daniel. Native American Ethnobotany. Timber Press, 1998.