Western bitterweed
Hymenoxys odorata DC.
Asteraceae (Sunflower Family)
Description
Western bitterweed is an erect, annual, composite plant in the Sunflower family. It reaches 3 inches to 2 feet tall. The stems are purplish near the base. This plant has a bitter taste and a distinct odor.
The leaves usually are woolly underneath and are located alternately along the stems.
Bright yellow flowers bloom from April through June and occasionally in the fall. With adequate rainfall, it is common to see pastures turn yellow with this plant in the spring.
Western bitterweed is highly toxic to sheep, especially during drought.
Habitat
Bitterweed is common in arid areas of the southern Great Plains from southwestern Kansas and central Texas to southern California and into Mexico. It is most common where soil disturbance or overgrazing has occurred. The populations can vary considerably from year to year.
Images
Plant Characteristics
Flower Color: Yellow
Seed Type: Non-Encapsulated
Duration: Annual
Stem Texture: Hairless/Smooth
Growth Habit: Forbs/Broadleaf
Leaf Shape
: Simple with Pinnate or Parallel Venation
Season: Warm
Distribution
: 03 - Post Oak Savannah, 04 - Blackland Prairies, 05 - Cross Timbers and Prairies, 06 - South Texas Plains, 07 - Edwards Plateau, 08 - Rolling Plains, 09 - High Plains, 10 - Trans-Pecos
Distributions
Distribution refers to the ecological region in Texas that a plant has been found. You can also view a clickable map.
Book: Brush and Weeds of Texas Rangelands (B-6208), Toxic Plants of Texas (B-6105)
Collection: Brush and Weeds, Wild Flowers
Livestock Affected: Sheep
Livestock Signs: Abdominal Pain, Anorexia, Arched Back, Colic, Depression/ Weakness
