veiny pea
(Lathyrus venosus var. intonsus)
Conservation • Wetland • Description • Habitat • Ecology • Use • Distribution • Taxonomy
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Description |
Veiny pea is a 24″ to 36″ long, climbing, perennial vine that rises from a rhizome. The stems are climbing, stout, and sparsely to densely hairy. They are not winged. The leaves are alternate, evenly pinnately divided into 8 to 12 leaflets, with a tendril at the end representing the terminal leaflet. At the base of each leaf there is a pair of small, leaf-like appendages (stipules). The stipules are narrow, asymmetrical, arrow-shaped but with only one sharp basal lobe. They are attached to the stem on one side of the base where the missing basal lobe would otherwise be. The leaflets are elliptic, 1⅛″ to 2⅜″ long. The inflorescence is a dense, unbranched, elongated cluster rising on a long stalk from some of the leaf axils. The clusters usually have 10 to 20 flowers, but may have as few as 5. The stalk is shorter than or as long as the subtending leaf. The individual flowers are ⅜″ to ¾″ long and pea-like, with 5 petals organized into a broad banner at the top, 2 narrow wings, and a keel in the center formed by two petals fused together at the tip. The petals are purple. There are 10 stamens. The fruit is a long, flat pod. |
Height |
Climbing, 24″ to 36″ long |
Flower Color |
Purple to red |
Similar Species |
American vetch (Vicia americana ssp. americana) leaflets are much smaller, no more than 1″ long. Marsh vetchling (Lathyrus palustris) stems are conspicuously winged. |
Habitat |
Dry. Upland woods and prairies. |
Ecology |
Flowering |
June to July |
Pests and Diseases |
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Use |
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Distribution |
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Sources |
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| 7/5/2022 | ||
Nativity |
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Native |
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Occurrence |
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Common |
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Taxonomy |
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Kingdom |
Plantae (green algae and land plants) |
Subkingdom |
Viridiplantae (green plants) |
Infrakingdom |
Streptophyta (land plants and green algae) |
Superdivision |
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Division |
Tracheophyta (vascular plants) |
Subdivision |
Spermatophytina (seed plants) / Angiospermae (flowering plants) |
Class |
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Superorder |
Rosanae |
Order |
Fabales (legumes, milkworts, and allies) |
Family |
Fabaceae (legumes) |
Subfamily |
Faboideae |
Tribe |
Fabeae (peas, vetches, and allies) |
Genus |
Lathyrus (sweet peas and vetchlings) |
Species |
Lathyrus venosus (veiny pea) |
Subordinate Taxa |
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There are three varieties of veiny pea. Only var. intonsus occurs in Minnesota. |
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Synonyms |
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Lathyrus multiflorus Lathyrus oreophilus Lathyrus venosus ssp. arkansanus Lathyrus venosus var. meridionalis Lathyrus rollandii Orobus venosus |
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Common Names |
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rough veiny vetchling smooth veiny pea smooth veiny peavine veiny pea veiny peavine veiny vetchling wild pea |
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Glossary
Pinnate
On a compound leaf, having the leaflets arranged on opposite sides of a common stalk. On a bryophyte, having branches evenly arranged on opposite sides of a stem.
Rhizome
A horizontal, usually underground stem. It serves as a reproductive structure, producing roots below and shoots above at the nodes.
Stipule
A small, leaf-like, scale-like, glandular, or rarely spiny appendage found at the base of a leaf stalk, usually occurring in pairs and usually dropping soon.
Wing
A thin, flat, membranous, usually transparent appendage on the margin of a structure.
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Luciearl |
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Veiny pea surrounded by raspberry bushes. |
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…from my ditch, dry, sandy. |
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MinnesotaSeasons.com Photos |
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Slideshows |
Lathyrus venosus |
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Visitor Sightings |
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| Luciearl 6/28/2022 |
Location: Fairview Twp., Cass County Veiny pea surrounded by raspberry bushes. |
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| Luciearl 6/10/2020 |
Location: Fairview Twp, Cass County …from my ditch, dry, sandy. |
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| Luciearl 6/1/2020 |
Location: Cass County |
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MinnesotaSeasons.com Sightings |
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Created: 12/25/2011 Last Updated: © MinnesotaSeasons.com. All rights reserved. |