spreading dogbane

spreading dogbane

 

 

 

 

 

 

 

 

 

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Apocynum androsaemifolium


Taxonomy

Family:

Apocynaceae (dogbane)

 

Subfamily:

Apocynoideae

 

Tribe:

Apocyneae


Nativity

Native

Status

 

Habitat

Borders of upland woods, occasionally in fields and roadsides. Full sun.

Flowering

June to August

Flower Color

Pale pink with dark pink veins

Height

8 to 32


Identification

This is an erect perennial rising from a fibrous rhizome, often forming colonies. It may take the form of an erect but inclined, branched stem, or it may be many-branched, in which case there is no central stem. The stems and leaves contain a milky juice.

The stems are usually red or tinged with red.

Leaves are opposite, untoothed, and egg-shaped or roughly egg-shaped but two or more times as long as wide with more or less straight sides. They are 1 to 3½ long and droop downward from the stem on short leaf stalks. They are tipped with a sharp, slender point. The upper surface is hairless and dark green. The underside is pale is usually hairy.

The inflorescence is a branched cluster with many flowers at the end of each stem and branched clusters with fewer flowers from the upper leaf axils. It usually extends beyond the leaves.

The flowers are ¼ to wide, fragrant, and nodding on flower stalks that are just over long.

The 5 petals are united at the base to form a bell shaped cylinder with 5 lobes. They are pale pink with dark pink vertical stripes. The lobes spread or curve backward strongly at their tips.

The fruit is a pair of 3 to 5½ long slender seed pods.

 
Similar
Species

Indian hemp (Apocynum cannabinum) is a taller plant. The leaves are usually erect or ascending, sometimes widely spreading. The inflorescence usually does not extend beyond the leaves. The flower is smaller, urn-shaped, and white or greenish white with no pink stripes. The corolla lobes are erect to spreading and do not curve backward.


Range Range Map   Sources: 2, 3, 5, 7.
 
Sightings

Bunker Hills Regional Park

Carver Park Reserve

Cottonwood River Prairie SNA

Crow Wing State Park

Elm Creek Park Reserve

Forestville/Mystery Cave State Park

Hastings Sand Coulee SNA

Hayes Lake State Park

Kellogg-Weaver Dunes SNA
Kellogg-Weaver Unit

Lake Bemidji State Park

Lake Carlos State Park

Lake Elmo Park Reserve

Lake Rebecca Park Reserve

Lost 40 SNA

Lost Valley Prairie SNA

Mille Lacs Kathio State Park

Myre-Big Island State Park

Old Mill State Park

Ordway Prairie

Philip J. Englund Ecotone

Pigeon River Cliffs

Pine Bend Bluffs SNA

Racine Prairie SNA

Rice Lake Savanna SNA

St. Croix Savanna SNA

Sibley State Park

Wild River State Park


Comments

 


Images  
  spreading dogbane   spreading dogbane        
               
  spreading dogbane            
               
  spreading dogbane and Silver-spotter Skipper   spreading dogbane   spreading dogbane    

Synonyms

Apocynum ambigens

Apocynum androsaemifolium var. glabrum

Apocynum androsaemifolium var. griseum

Apocynum androsaemifolium var. incanum

Apocynum androsaemifolium var. intermedium

Apocynum androsaemifolium ssp. pumilum

Apocynum androsaemifolium var. pumilum

Apocynum androsaemifolium var. tomentellum

Apocynum androsaemifolium var. woodsonii

Apocynum pumilum

Apocynum pumilum var. rhomboideum

Apocynum scopulorum

 
Common
Names

bitter dogbane

bitter-root

bitterroot

common dogbane

dogbane

dogsbane

flytrap dogbane

honey-bloom

low dogbane

milk ipecac

mountain dogbane

smooth mountain dogbane

spreading dogbane

wandering milkweed


 

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