Lysimachia is a genus of perennial herbs.
Leaves opposite or whorled, entire.
Flowers yellow, radially symmetrical, 5-parted, petals fused at base, lobes spreading, sepals fused at base; stamens 5, opposite petal lobes; ovary superior; inflorescence of racemes.
Fruit dry, a capsule, splitting open along sutures to release numerous triangular seeds (Radford et al. 1968).
Notes: Lysimachia comes from either the Greek lusimakhos, “ending strife,” or from a king of Thrace, Lysimakhos, possibly from both. (Diamond and Hsu 2004). Lysimachia is not in the same plant family as the invasive purple loosestrife (Lythrum salicaria Lythraceae)