Helianthus_giganteus

<i>Helianthus giganteus</i>

Helianthus giganteus

Species of sunflower

Helianthus giganteus, the giant sunflower or tall sunflower, is a species of Helianthus native to the eastern United States and eastern and central Canada, from Newfoundland west to Alberta south to Minnesota, Mississippi, and South Carolina.[2][3][4]

Quick Facts Helianthus giganteus, Conservation status ...

Description

Helianthus giganteus is a perennial herbaceous plant that can grow up to 4–5 metres (13–16 ft) tall. The leaves are slender and lanceolate. The flower heads are bright yellow, up to 7 cm (3 in) in diameter. They are most commonly found in valleys with wet meadows or swamps[5][4] and even near river banks.

References

  1. [1]
    "Helianthus giganteus". The Global Compositae Checklist (GCC) – via The Plant List. Note that this website has been superseded by World Flora Online
  2. [2]
    "Helianthus giganteus". Germplasm Resources Information Network. Agricultural Research Service, United States Department of Agriculture. Retrieved 14 January 2018.
  3. [3]
    "Helianthus giganteus". County-level distribution map from the North American Plant Atlas (NAPA). Biota of North America Program (BONAP). 2014.
  4. [4]
    Schilling, Edward E. (2006). "Helianthus giganteus". In Flora of North America Editorial Committee (ed.). Flora of North America North of Mexico (FNA). Vol. 21. New York and Oxford: Oxford University Press – via eFloras.org, Missouri Botanical Garden, St. Louis, MO & Harvard University Herbaria, Cambridge, MA.
  5. [5]
    Wisconsin Plant of the Week: Helianthus giganteus


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