''Ranunculus pensylvanicus'' is a

flowering plant Flowering plants are plants that bear flowers and fruits, and form the clade Angiospermae (). The term angiosperm is derived from the Ancient Greek, Greek words (; 'container, vessel') and (; 'seed'), meaning that the seeds are enclosed with ...

species in the buttercup family,

Ranunculaceae Ranunculaceae (, buttercup or crowfoot family; Latin "little frog", from "frog") is a family (biology), family of over 2,000 known species of flowering plants in 43 genera, distributed worldwide. The largest genera are ''Ranunculus'' (600 spec ...

. Common names include bristly buttercup, bristly crowfoot and Pennsylvania buttercup. It is native to

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

with a distribution over the northern part of the continent.USDA Natural Resources Conservation Service Plants Profile
20 Dec 2011

References

pensylvanicus Plants described in 1781 Flora of Northern America {{Ranunculaceae-stub