Ficaria verna (Lesser celandine) is a perennial ground-covering plant native to northern Europe, newly found to be invasive in the Great Lakes region. F. verna forms a dense mat in the early spring, outcompeting native ephemeral species, many of which are already threatened. It can be identified by its small (1-4 cm), lobed leaves growing in clusters with 7-12 petaled, glossy, yellow inflorescences (2-5 cm). After blooming, F. verna forms clusters of small bulblets and tubers which spread and easily propagate if disturbed.
