Table 2.

Taxonomy of Echinacea species.

Botanical name	Usual common name	Popular name used in scientific literature
Echinacea purpurea (L.) Moench	Purple coneflower	E. purpurea
Echinacea pallida var angustifolia (DC.) Cronq.	Narrow leaf coneflower	E. angustifolia
Echinacea pallida var pallida (Nutt.) Cronq.	Pale purple coneflower	E. pallida
Echinacea atrorubens var atrorubrens	Topeka purple coneflower	E. atrorubens
Echinacea laevigata (Boynton and Beadle) Blake	Smooth coneflower	E. laevigata
Echinacea atrorubens var paradoxa (J. B. S. Norton) Britt.	Yellow coneflower	E. paradoxa
Echinacea pallida (Nutt.) var sanguinea (Nutt.) Gandhi & R. D. Thomas	Sanguine purple coneflower	E. sanguinea
Echinacea pallida (Nuttall) Nuttall var simulata (McGregor)	Wavyleaf purple coneflower	E. simulata
Echinacea pallida var tennesseensis (Beadle) Small	Tennessee coneflower	E. tennesseensis