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Plant Profile  
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Common Name: Antelopehorn Milkweed

Other Names: Green Antelopehorn

Species Name: Asclepias viridis

Plant Type: Forb

Family Name: Asclepiadaceae, Milkweed Family





Plant Facts  
Origin Native
Duration Perennial 
Distribution in the U.S. Eastern half from West Virginia and Florida, and west to Nebraska, Kansas and west Texas
Distribution in Oklahoma Eastern two-thirds of the state



ID Characteristics

  • Field Identification Characteristics


    • Broad, oblong leaves with short stems
    • Large solitary clustered flower heads
    • Has milky sap; sometimes erect but usually leaning or along ground


    • Flowers green with purple star-shaped centers
  • Leaf and Stem Characteristics
    • Leaf Type: Simple
    • Leaf Arrangement: Opposite; there is two leaves per node
    • Leaf Shape: Broadly oblong or ovate to lanceolate
    • Stipules: Absent
  • Floral Characteristics
    • Petal Number: 5, fused
    • Flower Color: Pale Green
    • Flower Timing: May and July
    • Fruit Type: Ribbed follicles



Soil Type Clay and loam soils
Habitat Open prairies, dry open woods, heavily grazed pastures and disturbed sites
Successional Stage Mid


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