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Summary
Lathyrus lanszwertii is an herbaceous perennial plant 20 - 80cm tall. Its erect to clambering stems attach themselves to nearby vegetation by means of tendrils[71 ]. The plant is harvested from the wild for local use as food. Arizona/Nevada (thickleaf) peavine (Lathyrus lanszwertii var. leucanthus) has edible young seedpods, eaten cooked by Native Americans, with a flavor like garden peas but more bitter and stringy. Use only in small amounts due to toxic lathyrogens. USDA Zones 5–9; native, not invasive.
Physical Characteristics
Lathyrus lanszwertii is a PERENNIAL growing to 0.5 m (1ft 8in) by 0.3 m (1ft).
See above for USDA hardiness. It is hardy to UK zone 6 and is not frost tender. The flowers are 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
Accepted Infraspecifics: L. lanszwertii var. aridus (Piper) Jeps. L. lanszwertii var. arizonicus (Britton) S.L.Welsh. L. lanszwertii var. bijugatus (T.G.White) Broich L. lanszwertii var. lanszwertii. L. lanszwertii var. pallescens Barneby.
Plant Habitats
Edible Uses
The ripe seedpods are cooked and eaten[257 ]. They can be dried and stored for later use - soaking them and then boiling them when needed[257 ]. (as var leucanthus). Arizona or Nevada peavine (Lathyrus lanszwertii var. leucanthus) is a native legume of the southwestern U.S., found in the mountains of Arizona, New Mexico, Colorado, Utah, and extending west into California, Oregon, and Washington. Like all members of the Lathyrus genus, it contains toxic amino acids (lathyrogens) that can cause serious health effects such as neurolathyrism or osteolathyrism if eaten in quantity. Because boiling reduces but does not eliminate these toxins, all parts must be thoroughly cooked and should only be consumed sparingly. The main edible part of this species is the seedpods, which were traditionally gathered and cooked by the Mescalero and Chiricahua Apache. The young pods, collected soon after flowering, taste similar to cultivated pea pods but are more bitter, with a stringy texture. Older pods quickly become tough and dry, limiting their usefulness as a vegetable. While this species does produce palatable pods in the right stage, it was never a significant food source and was more of a supplementary or survival resource [2-3].
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.
None known
References More on Medicinal Uses
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Other Uses
Nitrogen Fixer
Special Uses
References More on Other Uses
Cultivation details
It is a perennial and grows primarily in the temperate biome. Species in this genus generally grow well when given a position in full sun in most moderately fertile, well-drained soils[200 ]. This species has a symbiotic relationship with certain soil bacteria, which 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[1309 ]. Arizona/Nevada (thickleaf) peavine (Lathyrus lanszwertii var. leucanthus) has edible young seedpods, eaten cooked by Native Americans, with a flavor like garden peas but more bitter and stringy. Use only in small amounts due to toxic lathyrogens. USDA Zones 5–9; native, not invasive.
References Carbon Farming Information and Carbon Sequestration Information
Temperature Converter
Type a value in the Celsius field to convert the value to Fahrenheit:
Fahrenheit:
The PFAF Bookshop
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Plant 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.
Other Names
If available other names are mentioned here
Arizona or Nevada peavine (Lathyrus lanszwertii var. leucanthus)
Native Range
Native to: Arizona, British Columbia, California, Colorado, Idaho, Mexico Northeast, Mexico Northwest, Montana, Nevada, New Mexico, Oregon, Texas, Utah, Washington, Wyoming
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.
This is a native species, not generally considered invasive. It is, however, grazed heavily by livestock, which can reduce local availability.
Conservation Status
IUCN Red List of Threatened Plants Status : Not available
| Related Plants
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| Latin Name | Common Name | Habit | Height | Hardiness | Growth | Soil | Shade | Moisture | Edible | Medicinal | Other |
| Lathyrus alatus | | Perennial | 0.6 |
-
| | LMH | SN | M | 1 | 0 | |
| Lathyrus aphaca | Yellow-Flowered Pea | Annual | 0.9 |
-
| | LMH | N | DM | 1 | 1 | |
| Lathyrus cicera | Chickling Vetch, Red pea | Annual | 0.0 |
0-0
| | LMH | N | M | 1 | 0 | |
| Lathyrus davidii | | Perennial | 1.2 |
5-9
| | LMH | SN | M | 1 | 0 | |
| Lathyrus graminifolius | Grassleaf Peavine | Perennial | 0.5 |
4-8
| | LMH | N | DM | 2 | 0 | 2 |
| Lathyrus japonicus | Beach Pea, Smallflower beach pea | Perennial | 0.6 |
3-7
| | LMH | N | DM | 2 | 0 | |
| Lathyrus japonicus maritimus | Beach Pea | Perennial | 0.6 |
3-7
| | LMH | N | DM | 2 | 0 | 3 |
| Lathyrus latifolius | Perennial Sweet Pea, Perennial pea | Perennial Climber | 2.0 |
5-9
| F | LMH | SN | DM | 3 | 0 | 2 |
| Lathyrus linifolius montanus | Bitter Vetch | Perennial | 0.6 |
5-9
| | LMH | SN | M | 2 | 0 | 3 |
| Lathyrus nervosus | Lord Anson's Pea | Perennial Climber | 0.5 |
8-11
| | LMH | N | M | 2 | 0 | |
| Lathyrus ochroleucas | Cream Peavine | Perennial | 1.0 |
-
| | LMH | SN | M | 1 | 1 | |
| Lathyrus ochrus | Cyprus Vetch | Annual | 0.6 |
-
| | LMH | N | DM | 1 | 0 | |
| Lathyrus odoratus | Sweet Pea, Wild Pea,Vetchling | Annual Climber | 2.0 |
2-11
| F | LMH | SN | M | 1 | 0 | 3 |
| Lathyrus ornatus | Bush Vetchling | Perennial | 0.3 |
3-7
| | LMH | N | DM | 1 | 1 | |
| Lathyrus palustris | Slenderstem Peavine, Marsh pea | Perennial Climber | 1.2 |
4-8
| | LMH | N | MWe | 1 | 0 | |
| Lathyrus polymorphus | Manystem Peavine, Hoary pea | Perennial | 0.4 |
0-0
| | LMH | N | M | 1 | 0 | |
| Lathyrus pratensis | Meadow Vetchling | Perennial | 1.2 |
4-8
| | LMH | N | MWe | 0 | 1 | 1 |
| Lathyrus quinquenervius | | Perennial | 0.6 |
-
| | LMH | N | MWe | 1 | 0 | |
| Lathyrus sativus | Chickling Pea, White pea | Annual | 0.6 |
0-0
| | LMH | N | M | 2 | 1 | 3 |
| Lathyrus sylvestris | Flat pea, Wood pea | Perennial Climber | 1.5 |
6-9
| F | LMH | SN | M | 0 | 0 | 3 |
| Lathyrus tuberosus | Earthnut Pea, Tuberous sweetpea | Perennial | 1.2 |
5-9
| | LMH | SN | M | 5 | 0 | 3 |
|
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
Kellogg
Botanical References
Links / References
For a list of references used on this page please go here
A special thanks to Ken Fern for some of the information used on this page.
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