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Brown-Eyed Susan can be distinguished from similar species by the smaller size of its flowerheads and the smaller number of ray florets per flowerhead. It is usually more tall and bushy than Rudbeckia hirta (Black-Eyed Susan), but it is shorter with fewer lobed leaves than Rudbeckia laciniata (Cutleaf Coneflower). Brown-Eyed Susan is often observed in the eastern range of the tallgrass prairie, but it tends to retreat to wetland or woodland areas further to the west where rainfall amounts are lower and summer temperatures are more extreme. Return


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© John Hilty

Source: Illinois Wildflowers

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