Helianthus laciniatus is a North American species of sunflower known by the common name alkali sunflower.[2] It is found in the southwestern United States (southeastern Arizona, southern New Mexico, western Texas)[3] and north-central Mexico (Chihuahua, Coahuila, Nuevo León, Durango).[4] It is fairly common in the Chihuahuan Desert.[5]
Helianthus laciniatus is a perennial herb up to 200 cm (almost 7 feet) tall. Most of the leaves are on the stem rather than clumped together close to the ground, each leaf is up to 9 cm (2.7 inches) long. One plant usually produces 1-9 flower heads. Each head has with 14–20 yellow ray florets surrounding 40 or more red or purple disc florets. The plant grows in dry, alkaline desert soils.[5]
References
- ^ The Plant List, Helianthus laciniatus A.Gray
- ^ USDA, NRCS (n.d.). "Helianthus laciniatus". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 6 July 2015.
- ^ Biota of North America Program 2014 county distribution map
- ^ SEINet, Southwestern Biodiversity, Arizona Chapter, Helianthus laciniatus A. Gray photos, description, distribution map
- ^ a b Flora of North America, Helianthus laciniatus A. Gray
External links