black medick

(Medicago lupulina)

               
Conservation Status

IUCN Red List

not listed

black medick

NatureServe

NNA - Not applicable

SNA - Not applicable

Minnesota

not listed

Wetland
Indicator
Status

Great Plains

FACU - Facultative upland

Midwest

FACU - Facultative upland

Northcentral & Northeast

FACU - Facultative upland

Nativity

Native to Asia, Europe, Northern Africa, and the Indian Subcontinent. Introduced and naturalized in North America.

Occurrence

Very common

 
Habitat

Disturbed sites

 
Flowering

May to September

     
Flower Color

Yellow

     
Height

8 to 32

     
 
Identification

This is a low annual or biennial forb that rises on multiple stems from a taproot.

The stems are sprawling, ascending, or erect, hairy, and 4-angled.

The leaves are alternate and compound, divided into 3 leaflets. They are on short leaf stalks. The leaflets are elliptical to egg-shaped with the attachment at the narrow end, to ¾ long and wide. The terminal leaflet is on a stalk or more long. Leaflet margins are finely-toothed. The tip of each leaflet is notched and bears a small spine. The upper surface is sparsely hairy, the lower surface is hairy.

The inflorescence is many globular, head-like clusters at the end of long, unbranched, leafless, stalks rising from the leaf axils. The stalks are 1 to 4 times longer than the subtending leaves. The flower heads are ¼ to almost ½ across. Each head has 10 to 50 flowers.

The flowers are pea-like, with 5 petals organized into a banner, 2 wings, and a keel formed by two petals fused together at the tip. The keel is smooth, not grooved. The petals are yellow. The individual flowers are stalkless.

The fruit is a black, kidney-shaped seed pod containing a single seed.

 
Similar
Species

Palmate hop clover (Trifolium aureum) has leaflets without a notch or spine at the tip. The terminal leaflet is attached without a stalk.

 
Distribution Distribution Map   Sources: 2, 3, 4, 5, 7, 22, 28.
 
Comments

 

 
Taxonomy

Family:

Fabaceae (pea)

 

Subfamily:

Faboideae (Papilionoideae)

 

Tribe:

Trifolieae

 

Genus:

Medicago

 

Section:

Lupularia

 
Synonyms

Medicago lupulina var. cupaniana

Medicago lupulina var. glandulosa

Medicago lupulina var. willdenowii

 
Common
Names

black medic

black medic clover

black medick

hop clover

hop medic

lupuline

nonesuch

nonesuch clover

shamrock

yellow trefoil

yellow-trefoil

 

 

 

 

 

 

 

       
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MinnesotaSeasons.com Photos
   

Plant

  black medick    
       

Inflorescence

  black medick   black medick
       

Leaves

  black medick    
       
       

 

Camera

     
Slideshows
   
  Black Medic
Wez Smith
 
  Black Medic  
     
  Black Medick
DianesDigitals
 
  Black Medick  
 
About

Copyright DianesDigitals

 
     
  Medicago lupulina BLACK MEDICK
Frank Mayfield
 
  Medicago lupulina BLACK MEDICK  

 

slideshow

       
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Other Videos
 
  Weed of the Week #620 - Black Medic (From Ag PhD #620 2/21/10)
AgPhD
 
   
 
About

Uploaded on Mar 1, 2010

The true shamrock, and a true pain in the rear. It's our Weed of the Week, Black Medic.

   
       

 

Camcorder

         
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Bertram Chain of Lakes Regional Park

Big Stone Lake State Park

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Upper Sioux Agency State Park

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Woodbury WMA

 

 

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