What a weird name for a plant! And one that, if you can suspend your animus, is so pretty. Unfortunately, this one's pretty awful. It's blooming now, and many folks think it's a desirable addition to their garden. It's sold online as such, along with many other nasties. (I'm still dealing with a passionflower Goliath and five leaf akebia, both of which were sold to me by a garden center years ago.)
If you've seen lesser celandine blanketing a forest floor, you'd marvel at how cheery it is ... bright green leaves, snappy little yellow blossom-dots, great coverage, and welcome color in early spring.
Problem is, lesser celandine, also known as fig buttercup, spreads quickly and smothers all those beautiful native "spring ephemerals" that are trying to come up for air - blood root, trillium, Virginia bluebells, wild ginger. Smother is the operative word. This stuff is like a toupee tightly woven across an expanse. (Not that I'm terribly familiar with toupees.)
While cleaning up my garden on Sunday morning I came across a patch of it about the size of a seat cushion. First time. Who invited you in? I tore it out and tossed it in the trash. It appeared to come out cleanly, but you never know.