What is echinacea and its background history?

Echinacea is a purple flower that only grows in north america. it's a healing herb.

history:
The 18th century German botanist, Conrad Moench, named the genus Echinacea, referring to the spiny, round seedhead which reminded him of a hedgehog.
Early settlers soon adopted the plant’s medicinal value from Native Americans as a remedy for colds and influenza, and took it to Europe in the 17th century.

The two answers are static and awkward postures.

Is this used on a test? ?