A Helianthus L. genus comprises 67 species and several subspecies in the Asteraceae family, all of which are native to North America.

Nonetheless, at least them metal money Helianthus annuus (sunflower) & Helianthus tuberosus (Jerusalem artichoke) are cultivated within Europe and other area of the globe in todays world.

Which are actually unremarkably tall, annual or perennial plants, growing to a height of 60-390 cm. A rough out & haired stem is branched in the upper part. A petiolate leaves are dentate and typically sticky. A moo leaves come paired, ovate or often heart-cordiform. A upper leaves come surrogate & narrower.

It bear numbers of to many wide, terminal capitula (flower heads), with brilliantly yellowness ray florets at a outside & brownish-red disc florets in. These flower heads watch a counsel of the sun, going from either east to west in a period of the day.

Species
Helianthis agrestis : Southeastern Sunflower Helianthus angustifolius : Swamp Sunflower Helianthus annuus : Sunflower, Mirasol Sunflower anomalus : American Sunflower Helianthus argophyllus : Silverleaf Sunflower Sunflower arizonensis : Arizona Sunflower Sunflower atrorubens Sunflower bolanderi : Serpentine Sunflower Sunflower californicus : California Sunflower Sunflower carnosus : Lakeside Sunflower Helianthus ciliaris : Texas Blueweed Sunflower cinereus Sunflower cusickii : Cusick's Sunflower Helianthus debilis : Cucumberleaf Sunflower Sunflower debilis ssp. cucumerifolius : Cucumberleaf Sunflower Sunflower debelis ssp. debilis : Cucumberleaf Sunflower Sunflower debilis ssp. silvestris : Cucumberleaf Sunflower Sunflower debilis ssp. tardiflorus : Cucumberleaf Sunflower Sunflower debilis ssp. vestitus : Cucumberleaf Sunflower Helianthus decapetalus : Thinleaf Sunflower Sunflower divaricatus Sunflower eggertii : Eggert's Sunflower Sunflower floridanus : Florida Sunflower Helianthus giganteus Sunflower glaucophyllus : Whiteleaf Sunflower Sunflower gracilentus : Slender Sunflower Helianthus grosseserratus Helianthus heterophyllus : Variableleaf Sunflower Helianthus hirsutus Helianthus laciniatus : Alkali Sunflower Helianthus laetiflorus Sunflower laevigatus : Smooth Sunflower Sunflower longifolius : Longleaf Sunflower Helianthus maximiliani : Maximillian Sunflower Sunflower microcephaly : Microscopic Woodland Sunflower Helianthus mollis Helianthus neglectus : Neglected Sunflower Sunflower niveus Sunflower niveus ssp. canescens : Showy Sunflower Sunflower niveus ssp. tephrodes : Algodones Sunflower Sunflower nuttallii Sunflower nuttallii ssp. nuttallii : Nuttall's Sunflower Sunflower nuttallii ssp. parishii : Parish's Sunflower Sunflower nuttallii ssp. Rydbergii : Rydberg constant's Sunflower Helianthus occidentalis : Fewleaf Sunflower Sunflower occidentalis ssp. occidentalis : Fewleaf Sunflower Sunflower occidentalis ssp. plantagineus : Fewleaf Sunflower Helianthus paradoxus : Paradox Sunflower Sunflower pauciflorus Sunflower pauciflorus ssp. pauciflorus : Hard Sunflower Sunflower pauciflorus ssp. subrhomboideus : Hard Sunflower Helianthus petiolaris Helianthus petiolaris ssp. fallax : Prairie Sunflower Helianthus petiolaris ss. petiolaris : Prairie Sunflower Sunflower porteri : Porter's Sunflower Sunflower praecox Sunflower praecox ssp. hirtus : Texas Sunflower Sunflower praecox ssp. praecox : Texas Sunflower Sunflower praecox ssp. runyonii : Runyon's Sunflower Sunflower praetermissus : Up to date Mexico Sunflower Sunflower pumilus : Little Sunflower Sunflower radula : Rayless Sunflower Sunflower resinosus : Resindot Sunflower Helianthus salicifolius : Willowleaf Sunflower Sunflower schweinitzii : Schweinitz's Sunflower Sunflower silphioides : Rosinweed Sunflower Helianthus simulans : Muck Sunflower Sunflower smithii : Smith's Sunflower Helianthus strumosus : Paleleaf Woodland Sunflower Helianthus tuberosus (Jerusalem Artichoke)