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yellow tackstem
Scientific Name: Calycoseris parryi
Family: Asteraceae
Category: Dicot
Growth: Forb/herb
Duration: Annual
Other Names:
Calycoseris parryi: Yellow Tack-Stem
Calycoseris parryi, commonly known as Yellow Tack-Stem, is a captivating spring wildflower that graces the arid landscapes of the southwestern United States.
Considerations for Pets
- The plant produces a milky sap.
Considerations for Children
- The plant produces a milky sap.
Taxonomy and Nomenclature
- Scientific Name: Calycoseris parryi A. Gray
- Common Name: Yellow Tack-Stem
- Family: Asteraceae (Aster Family)
- Other common names: Yellow Tackstem
Distribution and Habitat
- Calycoseris parryi thrives in the Mojave Desert, the Sonoran Desert, and surrounding regions of the southwestern United States.
- It prefers sandy soil and can be found at elevations up to 6000 feet.
Morphological Characteristics
- This desert annual is a low, erect plant, typically growing up to 12 inches (approximately 30 cm) tall.
- It features dark-colored, tack-shaped glands, which contribute to its common name.
- The plant emerges from a rosette of divided, green, basal leaves.
- It has distinctive yellow flowerheads with several layers of notched petals.
- The flowers have many yellow ligules, measuring 1.5-2.5 cm.
- The inner linear receptacle is minutely bristly, otherwise naked.
Quirky Facts
- The "tack-stem" name comes from the presence of dark-colored, tack-shaped glands.
Interactions with Other Organisms
- This plant is a spring wildflower providing nectar and pollen to desert insects.
Further Information
- Additional information can be found on Discover Life's page dedicated to Calycoseris parryi.
- Refer to USDA Symbol CAPA7 for more details.
- CalPhotos offers various images of the plant.