Helianthus laciniatus

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
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Asterales
Family:
Asteraceae
Genus:
Helianthus
Species:
H. laciniatus
Binomial name
Helianthus laciniatus
A.Gray 1849 not (L.) E.H.L.Krause 1905
Synonyms[1]
  • Helianthus crenatus R.C.Jacks.
  • Helianthus heiseri R.C.Jacks.

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
  1. The Plant List, Helianthus laciniatus A.Gray
  2. "Helianthus laciniatus". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 6 July 2015.
  3. Biota of North America Program 2014 county distribution map
  4. SEINet, Southwestern Biodiversity, Arizona Chapter, Helianthus laciniatus A. Gray photos, description, distribution map
  5. Flora of North America, Helianthus laciniatus A. Gray


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