Helianthus salicifolius

Helianthus salicifolius
Scientific classification
Kingdom: Plantae
(unranked): Angiosperms
(unranked): Eudicots
(unranked): Asterids
Order: Asterales
Family: Asteraceae
Genus: Helianthus
Species: H. salicifolius
Binomial name
Helianthus salicifolius
A.Dietr.
Synonyms[1]
  • Helianthus filiformis Small
  • Helianthus orgyalis DC.

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 grows in limestone prairies. It is a perennial herb up to 250 cm (over 8 feet) tall, spreading by means of underground rhizomes. Leaves are long but very narrow, up to 21 cm (8.4 inches) 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. ↑ "Helianthus salicifolius". Natural Resources Conservation Service PLANTS Database. USDA. 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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