Lance Leaf Loosestrife - Lance Leaf Yellow Loosestrife
Primulaceae (Primrose) Family
Plant is an upright perennial. Its preferred habitat is alluvial woods, wet open sites and ditches.
The leaves are opposite on the stem, simple, acute to petiolate; lanceolate, entire, acute to acuminate, with base cuneate.
The flowers are panicle, usually in whorls of four; flowers are bisexual in nature and symmetrical in form. The calyx is 5-lobed; corolla is 5-lobed, rotate, with lobes often having a hair-like point; 5 stamens. Flowers occur in mid-summer; June to August.
Fruit is capsule.
This plant is notable in that it is one of the few species of Lysimachia to offer oil instead of nectar as a reward to pollinators. It is often cultivated as a decorative ornamental plant. It can be invasive, but new suckers can be removed easily to keep the plant under control.