Helianthus occidentalis Riddell
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Family
Asteraceae (Magnoliophyta)
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Scientific Name
Helianthus occidentalis Riddell
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Floras and Monographs
Helianthus occidentalis Riddell: [Book] Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.