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Extension

Common Name: Threadleaf Groundsel
Other Names: Woolly Groundsel, Threadleaf Ragwort
Species Name: Senecio flaccidus
Plant Type: Forb
Family Name: Asteraceae, Sunflower Family

 
Plant Facts
OriginNative
DurationPerennial
Distribution in the U.S.South Central; Kansas and Colorado to Texas and Arizona
Distribution in OklahomaTip of Panhandle and far southwestern corner

ID Characteristics

  • Field Identification Characteristics

    Vegetative

    • Leaves and stems covered in fuzzy white hairs
    • Narrow, lobed leaves
    • Stems branching from thick shaggy root

    Floral

    • Flowers yellow with noticeable head underneath ray petals
  • Leaf and Stem Characteristics
    • Leaf Type: Simple
    • Leaf Arrangement: Alternate
    • Leaf Shape: Pinnately lobed; filiform lobes
    • Stipules: Absent
  • Floral Characteristics
    • Petal Number: 8-13
    • Flower Color: Yellow
    • Flower Timing: June-August
    • Fruit Type: Achene
   
Habitat/Ecology
Soil TypeSandy and rocky soil
HabitatDry rocky plains, deserts and pinyon-juniper rangeland
Successional StageEarly