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Helianthus (/ ˌ h iː l i ˈ æ n θ ə s /) [3] is a genus comprising around 70 species of annual and perennial flowering plants in the daisy family Asteraceae commonly known as sunflowers. [ 4 ] [ 5 ] Except for three South American species, the species of Helianthus are native to North America and Central America .
The common sunflower (Helianthus annuus) is a species of large annual forb of the daisy family Asteraceae. The common sunflower is harvested for its edible oily seeds, which are often eaten as a snack food. They are also used in the production of cooking oil, as food for livestock, as bird food, and as a plantings in domestic gardens for ...
Since the first printing of Carl Linnaeus's Species Plantarum in 1753, plants have been assigned one epithet or name for their species and one name for their genus, a grouping of related species. [1] Many of these plants are listed in Stearn's Dictionary of Plant Names for Gardeners .
The Heliantheae (sometimes called the sunflower tribe) are the third-largest tribe in the sunflower family . With some 190 genera and nearly 2500 recognized species, only the tribes Senecioneae and Astereae are larger. The name is derived from the genus Helianthus, which is Greek for sun flower.
Perennial sunflower is a crop of sunflowers that are developed by crossing wild perennial and domestic annual sunflower species.. Annual sunflower is a major oilseed crop. Genes from wild perennial relatives may increase root depth and mass and extend the growing season.
The genus Helichrysum / h ɛ l ɪ ˈ k r aɪ s əm / consists of an estimated 600 species of flowering plants in the sunflower family ().The type species is Helichrysum orientale.They often go by the names everlasting, immortelle, and strawflower.
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.
The need for alternate fuel sources has been a pressing issue over the past ten years, and sunflower oil is one of the possible candidates. Among the 51 species of the genus Helianthus, H. anomalus shows promise because of its high oil concentration, linoleic fatty acid concentration and its large achenes. [7]