Lanceleaf Ragweed

Plant Profile
FYUSE 3D Image	Common Name: Lanceleaf Ragweed Other Names: Southern Ragweed Species Name: Ambrosia bidentata Plant Type: Forb Family Name: Asteraceae, Sunflower Family

Plant Facts
Origin	Native
Duration	Annual
Distribution in the U.S.	Midwest; from Ohio and Kentucky to Nebraska, Texas and Louisiana
Distribution in Oklahoma	Eastern one-third of the state

ID Characteristics

Field Identification Characteristics
Vegetative
- Foliage covered in hairs
- Wide, open branches
- Leaves directly attached to branches
- Leaves 3-pointed; middle point much longer than the other two
Floral
- Flowers small, green clusters in columns of branch tips
Leaf and Stem Characteristics
- Leaf Type: Simple
- Leaf Arrangement: Alternate
- Leaf Shape: Lobed; middle lobe considerably longer than 2 side lobes
- Stipules: Absent
Floral Characteristics
- Petal Number: 4-7 (male); 1 (female)
- Flower Color: Green (inconspicuous)
- Flower Timing: July-October
- Fruit Type: Achene

Habitat/Ecology
Soil Type	Various moist soils
Habitat	Borrow ditches and overgrazed prairie; highly disturbed areas
Successional Stage	Early