Enemion is a small genus of flowering plants in the buttercup family, Ranunculaceae, within the order Ranunculales. It was first described by the botanist Constantine Samuel Rafinesque in 1820. Commonly known as "false rue-anemones," the roughly five species in the genus are spring ephemerals — low, herbaceous perennials that emerge, flower, and set seed early in the growing season before dying back. They are characterized by branching stems, finely divided (ternately compound) leaves, and small white flowers.
The genus shows a North American distribution split between two regions. Enemion biternatum is native to eastern and central North America, while the remaining four species — E. occidentale, E. stipitatum, E. hallii, and E. savilei — are native to the West Coast of the United States and Canada. Enemion is closely allied to the genus Isopyrum, which fills a similar ecological niche with species native to Europe and Asia; some treatments have historically merged the two genera.
The genus name Enemion derives from the Ancient Greek ἠνέμιον (ēnémion), an old word for "anemone," reflecting the plant's similarity in appearance to true anemones, another genus in the buttercup family.
Etymology
The name Enemion comes from the Ancient Greek ἠνέμιον (ēnémion), an old word for ἀνεμώνη ("anemone"), referencing the genus's resemblance to true anemones.
Distribution
Enemion biternatum is native to eastern and central North America, while E. occidentale, E. stipitatum, E. hallii, and E. savilei are native to the West Coast of the United States and Canada.
Taxonomy Notes
Enemion belongs to the family Ranunculaceae (order Ranunculales) and was described by Rafinesque in 1820. The genus Isopyrum, native to Europe and Asia, is similar in form and ecology, and the two genera have historically been confused or combined in some classifications.
