Ranunculus abortivus is a species of flowering plant in the buttercup family, Ranunculaceae. Its common names include
littleleaf buttercup,
small-flower crowfoot,
small-flowered buttercup, and
kidneyleaf buttercup. It is widespread across much of North America, found in all 10 Canadian Provinces plus Yukon and Northwest Territories, and most of the United States, except Hawaii, Oregon, California, and parts of the Southwest.
(Wikipedia)