Leavenworth's eryngo

Eryngium leavenworthii, also known as Leavenworth's eryngo, is an annual plant in the parsley family that is native to the central United States. It can reach heights up to 3 feet. It inhabits dry rocky prairies, roadside fields, open woodlands and waste areas. The plant is mostly found in areas with limestone or chalk soils. Its flowers appear between July to September, although in some areas the flowers may bloom as late as November. The flower...