Pineapple Weed, a species native to the Pacific Northwest, but naturalized in much of the rest of the United States, has been added to the USWildflowers database (03/27/2013.) Scientific name is Matricaria discoidea. Photo below was taken in the Hell’s Canyon Park in Adams County, ID on May 28, 2013. Go to the Pineapple Weed detail page for more photos and information.

Pineapple Weed, Wild Chamomile, Rayless Chamomile, Disc Mayweed – Matricaria discoidea