? Helianthus
Sunflower (Helianthus annuus)
Scientific classification
Kingdom: Plantae Division: Magnoliophyta Class: Magnoliopsida Order: Asterales Family: Asteraceae Subfamily: Helianthoideae Tribe: Heliantheae Genus: Helianthus
Species
See text Download high resolution version (768x1024, 108 KB)http://pdphoto. ... Scientific classification or biological classification is how biologists group and categorize extinct and living species of organisms. ... Divisions Land plants (embryophytes) Non-vascular plants (bryophytes) Hepatophyta - liverworts Anthocerophyta - hornworts Bryophyta - mosses Vascular plants (tracheophytes) Lycopodiophyta - clubmosses Equisetophyta - horsetails Pteridophyta - true ferns Psilotophyta - whisk ferns Ophioglossophyta - adderstongues Seed plants (spermatophytes) †Pteridospermatophyta - seed ferns Pinophyta - conifers Cycadophyta - cycads Ginkgophyta - ginkgo Gnetophyta - gnetae Magnoliophyta - flowering plants Adiantum pedatum (a fern... Classes Magnoliopsida - Dicots Liliopsida - Monocots The flowering plants (also angiosperms or Magnoliophyta) are one of the major groups of modern plants, comprising those that produce seeds in specialized reproductive organs called flowers, where the ovulary or carpel is enclosed. ... Orders see text Dicotyledons or dicots are flowering plants whose seed contains two embryonic leaves or cotyledons. ... Families See text The Asterales are an order of dicotyledonous flowering plants which include the composite family Asteraceae (sunflowers and daisies) and its related families. ... Genera many, see list The aster or sunflower family (Family Asteraceae or, alternatively Family Compositae) is a taxon of dicotyledonous flowering plants. ...

The Helianthus L. genus comprises 67 species and several subspecies in the Asteraceae family, all of which are native to North America. A painting of Carolus Linnaeus Carl Linnaeus, also known after his ennoblement as Carl von Linné (   listen?), and who wrote under the Latinized name Carolus Linnaeus (May 23, 1707 – January 10, 1778), was a Swedish botanist who laid the foundations for the modern scheme of taxonomy. ... In biology, a genus (plural genera) is a grouping in the classification of living organisms having one or more related and morphologically similar species. ... Genera many, see list The aster or sunflower family (Family Asteraceae or, alternatively Family Compositae) is a taxon of dicotyledonous flowering plants. ... It has been suggested that Northern America be merged into this article or section. ...

However, at least the two species Helianthus annuus (sunflower) and Helianthus tuberosus (Jerusalem artichoke) are cultivated in Europe and other parts of the world today. Sunflowers is also a painting by Vincent van Gogh. ... Binomial name Helianthus tuberosus L., The Jerusalem artichoke, Helianthus tuberosus, is a flowering vegetable native to North America. ... World map showing location of Europe Europe is geologically and geographically a peninsula, forming the westernmost part of Eurasia. ...

These are usually tall, annual or perennial plants, growing to a height of 60-390 cm. The rough and hairy stem is branched in the upper part. The petiolate leaves are dentate and often sticky. The lower leaves are opposite, ovate or often heart-shaped. The upper leaves are alternate and narrower. In common parlance, a stem is any elongated, usually narrow, extension or supporting structure of an object. ... In botany, a leaf is an above-ground plant organ specialized for photosynthesis. ...

They bear several to many wide, terminal capitula (flower heads), with bright yellow ray florets at the outside and maroon disc florets inside. These flower heads follow the direction of the sun, going from east to west during the day. An inflorescence is a group or cluster of flowers on a branch of a plant. ...

Species

• Helianthis agrestis : Southeastern Sunflower
• Helianthus angustifolius : Swamp Sunflower
• Helianthus annuus : Sunflower, Mirasol
• Helianthus anomalus : Western Sunflower
• Helianthus argophyllus  : Silverleaf Sunflower
• Helianthus arizonensis : Arizona Sunflower
• Helianthus atrorubens
• Helianthus bolanderi : Serpentine Sunflower
• Helianthus californicus : California Sunflower
• Helianthus carnosus : Lakeside Sunflower
• Helianthus ciliaris : Texas Blueweed
• Helianthus cinereus
• Helianthus cusickii : Cusick's Sunflower
• Helianthus debilis : Cucumberleaf Sunflower
  • Helianthus debilis ssp. cucumerifolius : Cucumberleaf Sunflower
  • Helianthus debelis ssp. debilis : Cucumberleaf Sunflower
  • Helianthus debilis ssp. silvestris : Cucumberleaf Sunflower
  • Helianthus debilis ssp. tardiflorus : Cucumberleaf Sunflower
  • Helianthus debilis ssp. vestitus : Cucumberleaf Sunflower
• Helianthus decapetalus : Thinleaf Sunflower
• Helianthus divaricatus
• Helianthus eggertii : Eggert's Sunflower
• Helianthus floridanus : Florida Sunflower
• Helianthus giganteus
• Helianthus glaucophyllus : Whiteleaf Sunflower

Prairie Sunflower (Helianthus petiolaris)

• Helianthus gracilentus : Slender Sunflower
• Helianthus grosseserratus
• Helianthus heterophyllus : Variableleaf Sunflower
• Helianthus hirsutus
• Helianthus laciniatus : Alkali Sunflower
• Helianthus laetiflorus
• Helianthus laevigatus : Smooth Sunflower
• Helianthus longifolius : Longleaf Sunflower
• Helianthus maximiliani : Maximillian Sunflower
• Helianthus microcephalus : Small Woodland Sunflower
• Helianthus mollis
• Helianthus neglectus : Neglected Sunflower
• Helianthus niveus
  • Helianthus niveus ssp. canescens : Showy Sunflower
  • Helianthus niveus ssp. tephrodes : Algodones Sunflower

Willowleaf Sunflower (Helianthus salicifolius)

• 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
• Helianthus petiolaris
  • Helianthus petiolaris ssp. fallax : Prairie Sunflower
  • Helianthus petiolaris ss. 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
• Helianthus salicifolius : Willowleaf Sunflower
• Helianthus schweinitzii : Schweinitz's Sunflower
• Helianthus silphioides : Rosinweed Sunflower
• Helianthus simulans : Muck Sunflower
• Helianthus smithii : Smith's Sunflower
• Helianthus strumosus  : Paleleaf Woodland Sunflower
• Helianthus tuberosus (Jerusalem Artichoke)

Sunflowers is also a painting by Vincent van Gogh. ... Image File history File links Download high resolution version (480x640, 113 KB) Name Helianthus orgyalis Family Compositae Image no. ... Image File history File links Download high resolution version (480x640, 113 KB) Name Helianthus orgyalis Family Compositae Image no. ... Helianthus paradoxus, the puzzle sunflower, is a threatened species of sunflower found only in West Texas and New Mexico salt marshes. ... Binomial name Helianthus tuberosus L., The Jerusalem artichoke, Helianthus tuberosus, is a flowering vegetable native to North America. ...

External links

• See here for a more complete list of species