Stem. - Erect, two to four feet high. Leaves. - Opposite, narrowly oval, on fringed leaf-stalks. Flowers. - Yellow, on slender stalks from the axils of the leaves. Calyx. - Deeply five-parted. Corolla. - Deeply five-lobed, wheel-shaped, yellow, with a reddish centre. Stamens. - Five. Pistil. - One.

This plant is nearly akin to the yellow loosestrifes, but unfortunately it has no English name. It abounds in low grounds and thickets, putting forth its bright wheel-shaped blossoms early in July.