veiny pea

(Lathyrus venosus var. intonsus)

Conservation Status

IUCN Red List

not listed

NatureServe

N5 - Secure

SNR - Unranked

Minnesota

not listed

Wetland Indicator Status

Great Plains

FAC - Facultative

Midwest

FAC - Facultative

Northcentral & Northeast

FAC - Facultative

 
veiny pea
 
 
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, 1 to 2 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 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

 

Use

 

Distribution

Distribution Map

 

Sources

2, 3, 4, 5, 7, 24, 28, 29, 30.

7/5/2022    
     

Nativity

Native

     

Occurrence

Common

Taxonomy

Kingdom

Plantae (green algae and land plants)

Subkingdom

Viridiplantae (green plants)

Infrakingdom

Streptophyta (land plants and green algae)

Superdivision

Embryophyta (land plants)

Division

Tracheophyta (vascular plants)

Subdivision

Spermatophytina (seed plants) / Angiospermae (flowering plants)

Class

Magnoliopsida (flowering plants)

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

There are three varieties of veiny pea. Only var. intonsus occurs in Minnesota.

   

Synonyms

Lathyrus multiflorus

Lathyrus oreophilus

Lathyrus venosus ssp. arkansanus

Lathyrus venosus var. meridionalis

Lathyrus rollandii

Orobus venosus

   

Common Names

rough veiny vetchling

smooth veiny pea

smooth veiny peavine

veiny pea

veiny peavine

veiny vetchling

wild pea

 

 

 

 

 

 

 

 

 

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

Veiny pea surrounded by raspberry bushes.

veiny pea   veiny pea
     

…from my ditch, dry, sandy.

veiny pea   veiny pea
     
veiny pea    
MinnesotaSeasons.com Photos
veiny pea  

 

 

Camera

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Lathyrus venosus
Corey Raimond

Lathyrus venosus

 

slideshow

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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.

veiny pea
Luciearl
6/10/2020

Location: Fairview Twp, Cass County

…from my ditch, dry, sandy.

veiny pea
Luciearl
6/1/2020

Location: Cass County

veiny pea
MinnesotaSeasons.com Sightings

 

 

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Created: 12/25/2011

Last Updated:

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