Lysimachia quadrifolia

Lysimachia quadrifolia whorled loosestrife

Plant grows in the wild/spontaneouslyPlant is native to PA

This native perennial species is a member of the primrose family and is in the same genus as the showier fringed and garden loosestrife plants. It is a delicate species with most leaves and flowers in whorls of 4, though this number can vary from 3 to 6. The flowers are star-like with five yellow petals fusing to form a corolla tube. The flowers rise from the axils of the leaves. The center of the flower is dotted with red dots and streaks extending up the petals. Each flower is about ½ inch wide. There are 5 stamens and a single pistil that extends beyond the stamens.

The simple leaves are 2-4 inches long, stiff, light green, and lance-shaped. The long roots are shallow, sometimes spreading across the surface of the ground. This species is a small plant, growing only 1-3 feet high. It is found in open woods, thickets, and shorelines in southern Ontario, Canada and the northeastern United States, but south to Georgia in the mountains. It is documented in all Pennsylvania counties. It blooms from June to September.

Contributed by: Mark Welchley

Common in dry, open woods.

Present throughout the state.

Wetland codes

Flowers May through early August.

S-rank:  No rank
G-rank:  G5 (Secure)