A field of echinacea or coneflowers.
coneflower definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any of several genera (esp. Rudbeckia, Ratibida, and Echinacea) of showy plants of the composite family, having cone-shaped receptacles, as the black-eyed Susan
coneflower definition by American Heritage Dictionary
Any of various North American plants of the genera Rudbeckia, Ratibida, and Echinacea in the composite family, having disk flowers on a cone-shaped central receptacle surrounded by colorful ray flowers.