Helianthus salicifolius

Helianthus salicifolius is a North American species of sunflower known by the common name willowleaf sunflower.[2] It is native to the central United States, primarily in the Great Plains and Ozark Plateau (states of Missouri, Kansas, Oklahoma, and Texas). There are a few reports of scattered populations in the Northeast and Midwest parts of the country, but these appear to be escapes from cultivation.[3]

Helianthus salicifolius
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Helianthus
Species:
H. salicifolius
Binomial name
Helianthus salicifolius
Synonyms[1]
  • Helianthus filiformis Small
  • Helianthus orgyalis DC.

Helianthus salicifolius grows in limestone prairies. It is a perennial herbaceous plant up to 2.5 m (8.2 ft) tall, spreading by means of underground rhizomes. The leaves are long but very narrow, up to 21 cm (8.3 in) long, but rarely more than 1.2 cm (half an inch) wide. One plant usually produces 6-15 flower heads, each containing 10-20 yellow ray florets surrounding 50 or more red disc florets.[4]

References
  1. The Plant List, Helianthus salicifolius A.Dietr.
  2. USDA, NRCS (n.d.). "Helianthus salicifolius". The PLANTS Database (plants.usda.gov). Greensboro, North Carolina: National Plant Data Team. Retrieved 6 July 2015.
  3. Biota of North America Program 2014 county distribution map
  4. Flora of North America, Helianthus salicifolius A. Dietrich 1834


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