veiny pea

(Lathyrus venosus var. intonsus)

Conservation Status
veiny pea
 
  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

     
           
 
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.

 
     
 
Biology
 
 

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)  
  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

Having the leaflets of a compound leaf arranged on opposite sides of a common stalk.

 

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      
           
 

…from my ditch, dry, sandy.

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

 

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Lathyrus venosus
Corey Raimond
  Lathyrus venosus  

 

slideshow

       
 
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Visitor Sightings
 
           
 

Report a sighting of this plant.

 
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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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