hedge bindweed

(Calystegia sepium)

               
Conservation Status

IUCN Red List

not listed

hedge bindweed

NatureServe

N5 - Secure

SNR - Unranked

Minnesota

not listed

Wetland
Indicator
Status

Great Plains

FAC - Facultative

Midwest

FAC - Facultative

Northcentral & Northeast

FAC - Facultative

Nativity

Native

 
Occurrence

Common

 
Habitat

Wet. meadows, prairies, thickets, forest edges, stream banks, river banks, ditches. Disturbed sites. Full to partial sun.

Flowering

June to September

     
Flower Color

White or pink and white

     
Height

Trailing, 1½ to 10 long

     
 
Identification

This is a perennial vine that rises on multiple stems from a deep, creeping rhizome and a deep, fibrous root system. The rhizome is branched and can be over 10 long.

The stems are light green or red, hairless, freely branched, and either angled or round. They are usually awkwardly climbing over adjacent vegetation or structures (scrambling), occasionally prostrate on the ground but not rooting at the tip (trailing). The stem grows in a spiral, at least toward the tip, curving around nearby plants (twining) in a counter-clockwise direction, allowing the stem to climb. They are usually 1½ to 10 long but can reach up to 13 or more.

The leaves are alternate, 2 to 4 long, and 2¾ to 3 wide. They are on leaf stalks that are always more than, usually much more than, half as long as the midvein of the attached leaf. The leaf blade is triangular in outline, arrow-shaped, pointed at the tip, and indented at the base. The basal lobes are trapezoidal and relatively spreading (directed outward). The sinus between the lobes is frequently broadly U-shaped. The upper and lower surfaces are hairless. The margins are untoothed.

The inflorescence is a solitary flower rising from the leaf axils above the midpoint of the stem.

The flowers are large and conspicuous. They are on 2 to 6 long flower stalks. There are two conspicuous, leaf-like appendages (bracts) at the base of the flower. The bracts are ½ to 1 long and to 1116 wide. They overlap only near the base. There are 5 petals, 5 sepals, and 5 stamens. The sepals are green, elliptic to narrowly egg-shaped, and 7 16 to long. They are more or less hidden by the bracts that subtend the flower. The petals (corolla) are fused at their base and for most of their length into a funnel-shaped tube and separated at the tip into five very shallow lobes. The corolla is usually white, rarely pink or pinkish tinged, and usually 1¾ to 2½ long and wide. The stamens are to 13 16long and do not protrude from the corolla. The anthers are yellow. There is 1 style with 2 stigmas. The flowers open in the morning and close at night, but often remain open on moonlit nights. They are not fragrant. Insects may be attracted to the warmth inside the funnel, which may be 5° above the air temperature.

The fruit is an egg-shaped, to long capsule with 2 to 4 seeds.

 
Similar
Species

Low bindweed (Calystegia spithamaea) stem is erect, does not twine, and does not get over 20 long.

Field bindweed (Convolvulus arvensis) is a smaller plant. The leaves are smaller, 1 to 2 in length. The basal lobes of the leaf blade are pointed, not trapeziodal. The bracts are much smaller and are positioned on the stem well below the inflorescence. The flowers are smaller, 1 or less long and wide.

Black bindweed (Fallopia convolvulus) is a shorter vine, no more than 40 in length. The stems and leaves do not have a milky latex. The leaf stalk has an ocrea at the base. The flower is small, to 3 16 long, and not showy. The fruit is an achene.

Ivy-leaved morning-glory (Ipomoea hederacea) has 3-lobed leaves. The flower is blue to purple.

Common morning-glory (Ipomoea purpurea) has rounded, heart-shaped, not triangular, arrow-shaped, leaves. The basal lobes of the leaf blade are broadly rounded, not squared off or pointed. The flower is blue to purple.

 
Distribution Distribution Map  

Sources: 2, 3, 4, 5, 7, 22, 28.

 
Comments

Subspecies
Some authorities, including ITIS37, recognize seven subspecies, two of which occur in Minnesota:

Appalachia false bindweed (Calystegia sepium ssp. appalachiana)
Bingham’s hedge bindweed (Calystegia sepium ssp. binghamiae)
hedge bindweed (Calystegia sepium ssp. americana)
hedge bindweed (Calystegia sepium ssp. angulata)
hedge bindweed (Calystegia sepium ssp. erratica)
hedge bindweed (Calystegia sepium ssp. limnophila)
hedge bindweed (Calystegia sepium ssp. sepium)

Appalachia false bindweed (Calystegia sepium ssp. appalachiana) bracts are 9 16 to 1 wide. They usually overlap for most of their length, not just near the base. The corolla is usually pink. It is uncommon in Minnesota.

Hedge bindweed (Calystegia sepium ssp. angulata) bracts are to 1116 wide. They overlap just near the base. The corolla is usually white but is sometimes pink or pinkish tinged between white ribs.

 
Taxonomy

Family:

Convolvulaceae (morning-glory)

 

Tribe:

Convolvuleae

 
Synonyms

Calystegia sepium var. angulata

Calystegia sepium var. repens

Convolvulus repens

Convolvulus sepium var. repens

 
Common
Names

hedge bindweed

hedge false bindweed

 

 

 

 

 

 

 

 

 

 

Glossary

Bract

Modified leaf at the base of a flower stalk or flower cluster.

 

Corolla

A collective name for all of the petals of a flower.

 

Rhizome

A horizontal, usually underground stem. It serves as a reproductive structure, producing roots below and shoots above at the nodes.

 

Scrambling

Climbing awkwardly over adjacent vegetation or structures.

 

Sepal

An outer floral leaf, usually green but sometimes colored, at the base of a flower.

 

Trailing

Prostrate on the ground and creeping, but not rooting at the tip.

 

Twining

Growing in a spiral usually around a stem of another plant that serves as support.

       
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Plant

  hedge bindweed    
       

White Flower

  hedge bindweed    
       

Pinkish-tinged Flower

  hedge bindweed   hedge bindweed
       
  hedge bindweed    
       

Pink Flower

  hedge bindweed   hedge bindweed
       
  hedge bindweed   hedge bindweed
       

Bracts

  hedge bindweed   hedge bindweed
       
  hedge bindweed   hedge bindweed
       

Leaf

  hedge bindweed   hedge bindweed
       
       

 

Camera

     
Slideshows
   
  Hedge Bindweed (Calystegia sepium) (Convolvulus sepium)
Andree Reno Sanborn
 
  Hedge Bindweed (Calystegia sepium) (Convolvulus sepium)  
     
  Hedge Bindweed (Calystegia sepium)
Bill Keim
 
  Hedge Bindweed (Calystegia sepium)  
     
  Convolvulus sepium HEDGE BINDWEED
Frank Mayfield
 
  Convolvulus sepium HEDGE BINDWEED  

 

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Missy Stangel
6/23/2017

Location: Cass Lake, Minnesota


     
     
 
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