Ranunculus ficaria L. ou Ficaria verna Fig buttercup Ranunculaceae - Buttercup family 18 mars 2017 Locust Grove Nature centre Introduced Bloom time : March to May Ficaria verna, commonly known as lesser celandine, is a weedy, tuberous rooted, herbaceous perennial that features bright, buttercup-like, yellow flowers that bloom in spring (March to May) and spreading rosettes of glossy, ovate-cordate, fleshy, dark green leaves (to 2”). This is a spring ephemeral. Plants form foliage mounds to 3-4” tall, with flower stems rising to 8-9” tall. When in bloom, colonies of plants are easily spotted, dense and vigorous. Mats of foliage exclude most other vegetation. After flowering, the plant foliage dies back by early summer as the plants go dormant. Lesser celandine is native to Europe and eastern Asia. It was introduced into North America many years ago (presumably for ornamental purposes), but has now naturalized in 19 states in the Northeast, the Pacific Northwest and e...