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Helianthus Linnaeus. Sunflower.

Key to Helianthus

A genus of about 50 species, herbs, of North America.

Key based in part on Schilling (2006c).

Ref: Cronquist (1980); Heiser et al. (1969); Kelley (2003) In Flora of North America Editorial Committee (2003b); Schilling (2006c) In Flora of North America Editorial Committee (2006c); Schilling et al. (1998). Show full citations.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Gary P. Fleming | Helianthus hirsutus | Original Image ⭷
image of plant© Gary P. Fleming | Helianthus mollis | Original Image ⭷
image of plant© Scott Ward | Helianthus radula | Original Image ⭷
image of plant© Scott Ward | Helianthus strumosus | Original Image ⭷
image of plant© Gary P. Fleming | Helianthus giganteus | Original Image ⭷
image of plant© Will Stuart | Helianthus atrorubens | Original Image ⭷
image of plant© Aidan Campos | Helianthus ciliaris source | Original Image ⭷
image of plant© Alan Cressler: Helianthus verticillatus, Wet Prairie, Coosa Prairies Area, Floyd County, Georgia 1 by Alan Cressler | Helianthus verticillatus source | Original Image ⭷
image of plant© Richard & Teresa Ware | Helianthus maximilianii CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Erik Danielson | Helianthus divaricatus source | Original Image ⭷
image of plant© Alan Cressler: Helianthus porteri, Stone Mountain, Stone Mountian Park, DeKalb County, Georgia 3 by Alan Cressler | Helianthus porteri source | Original Image ⭷
image of plant© Bruce A. Sorrie | Helianthus annuus | Original Image ⭷

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