loosestrife

plural loosestrifes

1. countableuncountableAny of certain flowering plants of the genera Lythrum and Lysimachia, which are in different taxonomic families.

   1919, Ronald Firbank, Valmouth, Duckworth, hardback edition, page 91, He had a suit of summer mufti, and a broad-brimmed blue beaver hat looped with leaves broken from the hedgerows in the lanes, and a Leander scarf tucked full of flowers: loosestrife, meadowrue, orchis, ragged-robin.

   2 more examples

   Most loosestrifes thrive in the northern part of the United States and Canada but only a few make good garden plants for the South.

   2008, Allan M. Armitage, Herbaceous Perennial Plants, 3rd edition, page 672

   2013, Théodore de Saussure, Jane F. Hill (translator), Chemical Research on Plant Growth, [Recherches chimiques sur la Végétation], page 22, I grew some peas, loosestrifes, and fleabanes [“inules”] in profound darkness, beneath two identical receptacles filled with atmospheric air.