Narrow-leaf Sunflower
Helianthus angustifolius

Interested in learning more about Narrowleaf Sunflower? Visit the reference links listed below:

Florida Wildflower Foundation Swamp Sunflower, Narrow-leaved Sunflower

Florida Friendly Landscaping Gardens Swamp Sunflower

NC State Extension Gardener Plant Toolbox Narrow Leaf Sunflower, Swamp Sunflower