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How to Grow Buttercup-Ranunculus. Buttercup flowers are members of the Ranunculus genus, a large family (about 400 species) of flowers.These bright, yellow, five-petaled summer bloomers, are native to Asia, Australia, Central America, North America and Europe.ow to Grow Buttercup-Ranunculus. Buttercup flowers are members of the Ranunculus genus, a large family (about 400 species) of flowers.
Try this one-got it from a website that I can't go back to for some reason: Lesser celandine. Ranunculus ficaria L. Buttercup family (Ranunculaceae). Download PDF version formatted for print (174 KB). --------------------------------------------------------------------------------. NATIVE RANGE. Europe. DESCRIPTION.Lesser celandine, also known as fig buttercup, is an herbaceous, perennial plant. Plants have a basal rosette of dark green, shiny, stalked leaves that are kidney-to heart-shaped.kea_gw April 2, 2009. I have a wooded area that is infested with Ranunculus ficaria and I want to get rid of it or at least contain its spread. They do disappear in the summer but they are crowding out celandine poppies and other early spring flowers.