[Lysimachia terrestris X L. thyrsiflora "(L.) Britton, Sterns & Poggenb."]
Etymology: Lysimachia: probably for Greek king Lysimachus or maybe from Greek lysis for "a release from" and mache for "fighting or strife"
Plants: erect, perennial, 16"-32" tall forb; stems smooth, often branched; roots long, creeping on or near surface of ground
Leaves: narrowly lance-like, opposite, dotted
Flowers: yellow, 5-parted; inflorescence numerous branched, many-flowered clusters from the middle leaf axils and terminal; blooms June-Aug.
Habitat: wet; bogs, shores, shallows
Conservation Status: Native