Helianthus laevigatus Torr. & A.Gray

Floras and Monographs

Helianthus laevigatus Torr. & A.Gray: [Book] Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

	The Plant List
	International Plant Name Index
	Tropicos
	Catalogue of Life
	Global Biodiversity Information Facility
	JSTOR Types
	JSTOR
	BHL
	Encyclopedia of Life
	WikiSpecies
	WikiData
	Google Scholar
	PubMed
	Morphbank
	IUCN
	National Center for Biotechnology Information
	Barcode of Life