向日葵属植物的特点是具有小花 聚合成盘状,周围呈放射性舌状花为中性不育花,内部盘花两性,有两个成熟后易脱落的,鳞片状冠毛;果实 为瘦果 。
向日葵属植物有一年生的也有多年生的,都是草本 植物。
种
Helianthus agrestis : Southeastern Sunflower 狭叶向日葵 Helianthus angustifolius : Swamp Sunflower 向日葵 Helianthus annuus Helianthus anomalus : Western Sunflower 绢毛葵 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 蓝茎向日葵 Helianthus ciliaris Helianthus cinereus Helianthus couplandii : Prairie Sunflower Helianthus cusickii : Cusick's Sunflower 原野向日葵(Helianthus petiolaris ) 小花葵 Helianthus debilis 瓜叶葵 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 美丽向日葵 Helianthus laetiflorus Helianthus laevigatus : Smooth Sunflower Helianthus longifolius : Longleaf Sunflower 柳叶向日葵(Helianthus salicifolius ) 糙叶向日葵 Helianthus maximiliani : Maximillian Sunflower Helianthus microcephalus : Small Woodland Sunflower 毛叶向日葵 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 菊芋,洋姜(Helianthus tuberosus ) Helianthus praetermissus : New Mexico Sunflower Helianthus pumilus : Little Sunflower Helianthus radula : Rayless Sunflower Helianthus resinosus : Resindot Sunflower 柳叶向日葵 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 注释
外部链接
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