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

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- 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

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- 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

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- 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

## 基本資料

- 說明：向日葵
- 母公司：3
- 學名：Helianthus
- 命名者：L.
- 異名：Harpalium (Cass.) Cass.