Lysimachia quadriflora, the fourflower yellow loosestrife,[1] is a species of herbaceous plant in the family Primulaceae.

Lysimachia quadriflora is an erect branched forb growing to a maximum height of about 2 feet (0.61 m).

The flowers grow from an inflorescence cluster at the ends of the stems and branches.

The five-parted flower is yellow with a reddish center and blooms from July to August.

[2] Its habitats include wet meadows, prairies, fields, swamps, and marshes.