向日葵屬

向日葵屬植物包括 52 種以及許多亞種，全部都是起源於北美洲，但現在有許多種已經作為食物或花卉被引進到世界各地種植。

向日葵屬植物的特點是具有小花聚合成盤狀，周圍呈放射性舌狀花為中性不育花，內部盤花兩性，有兩個成熟後易脫落的，鱗片狀冠毛；果實為瘦果。

向日葵屬植物有一年生的也有多年生的，都是草本植物。

種

Helianthus agrestis : Southeastern Sunflower
狹葉向日葵 Helianthus angustifolius : Swamp Sunflower
向日葵 Helianthus annuus
Helianthus anomalus : Western Sunflower
絹毛葵 Helianthus argophyllus : Silverleaf Sunflower
Helianthus arizonensis : Arizona Sunflower
黑紫向日葵 Helianthus atrorubens
Helianthus bolanderi : Serpentine Sunflower
Helianthus californicus : California Sunflower
Helianthus carnosus : Lakeside Sunflower
藍莖向日葵 Helianthus ciliaris
Helianthus cinereus
Helianthus couplandii : Prairie Sunflower
Helianthus cusickii : Cusick's Sunflower
小花葵 Helianthus debilis
瓜葉葵 Helianthus debilis ssp. cucumerifolius : Cucumberleaf Sunflower
Helianthus debelis ssp. debilis : Beach Sunflower, Dune Sunflower
Helianthus debilis ssp. silvestris : Cucumberleaf Sunflower
Helianthus debilis ssp. tardiflorus : Cucumberleaf Sunflower
Helianthus debilis ssp. vestitus : Cucumberleaf Sunflower
千瓣葵 Helianthus decapetalus : Thinleaf Sunflower
Helianthus deserticola
Helianthus divaricatus : Woodland Sunflower
Helianthus eggertii : Eggert's Sunflower
Helianthus floridanus : Florida Sunflower
Helianthus giganteus
Helianthus glaucophyllus : Whiteleaf Sunflower
Helianthus gracilentus : Slender Sunflower
Helianthus grosseserratus: Sawtooth Sunflower
Helianthus heterophyllus : Variableleaf Sunflower
Helianthus hirsutus
Helianthus laciniatus : Alkali Sunflower
美麗向日葵 Helianthus laetiflorus
Helianthus laevigatus : Smooth Sunflower
Helianthus longifolius : Longleaf Sunflower
糙葉向日葵 Helianthus maximiliani : Maximillian Sunflower
Helianthus microcephalus : Small Woodland Sunflower
毛葉向日葵 Helianthus mollis : Downy Sunflower, Ashy Sunflower
Helianthus multiflorus
Helianthus neglectus : Neglected Sunflower
Helianthus niveus
Helianthus niveus ssp. canescens : Showy Sunflower
Helianthus niveus ssp. tephrodes : Algodones Sunflower
Helianthus nuttallii
Helianthus nuttallii ssp. nuttallii : Nuttall's Sunflower
Helianthus nuttallii ssp. parishii : Parish's Sunflower
Helianthus nuttallii ssp. Rydbergii : Rydberg's Sunflower
Helianthus occidentalis : Fewleaf Sunflower
Helianthus occidentalis ssp. occidentalis : Fewleaf Sunflower
Helianthus occidentalis ssp. plantagineus : Fewleaf Sunflower
Helianthus paradoxus : Paradox Sunflower
Helianthus pauciflorus
Helianthus pauciflorus ssp. pauciflorus : Stiff Sunflower
Helianthus pauciflorus ssp. subrhomboideus : Stiff Sunflower
原野向日葵 Helianthus petiolaris
Helianthus petiolaris ssp. fallax : Prairie Sunflower
Helianthus petiolaris ssp. petiolaris : Prairie Sunflower
Helianthus porteri : Porter's Sunflower
Helianthus praecox
Helianthus praecox ssp. hirtus : Texas Sunflower
Helianthus praecox ssp. praecox : Texas Sunflower
Helianthus praecox ssp. runyonii : Runyon's Sunflower
Helianthus praetermissus : New Mexico Sunflower
Helianthus pumilus : Little Sunflower
Helianthus radula : Rayless Sunflower
Helianthus resinosus : Resindot Sunflower
柳葉向日葵 Helianthus salicifolius
Helianthus schweinitzii : Schweinitz's Sunflower
Helianthus silphioides : Rosinweed Sunflower
Helianthus simulans : Muck Sunflower
Helianthus smithii : Smith's Sunflower
Helianthus strumosus : Paleleaf Woodland Sunflower
菊芋 Helianthus tuberosus