Lysimachia × producta is a hybrid of flowering plant in the primrose family Primulaceae. It is native to eastern North America, from Quebec south to North Carolina, as far west as Wisconsin. The hybrid specific epithet producta means "stretched out, extended", a reference to the shape of its inflorescence. Indeed, the hybrid is sometimes referred to as the elongated loosestrife.
Description
Lysimachia × producta has erect stems long. The leaves are whorled or opposite, each long and wide, with smooth surfaces. The inflorescence is a (sometimes leafy) terminal raceme, long. The pedicels are long. The flowers are 5-merous with yellow petals, streaked with reddish or reddish-black markings. The filaments are shorter than the petals.
The parents of Lysimachia × producta are L. quadrifolia and L. terrestris. The flowers of the hybrid and its parents are very similar but overall L. × producta more closely resembles L. terrestris since both have terminal racemes. The two may be distinguished by the length of the raceme, the length of the pedicels, and whorled (as opposed to opposite) leaves.
L. quadrifolia Lysimachia × producta L. terrestris Leaves Whorled, (3-)4(-7) leaves per whorl, each long and wide, rarely to wide Whorled or opposite, each long and wide Usually opposite or subopposite (rarely alternate), each long and wide Inflorescence Solitary flowers in leaf axils Terminal raceme, long Terminal raceme, long Pedicels From long From long From long Flowers 5-merous 5-merous 5-merous Perianth Petals yellow, with reddish base Petals yellow, with reddish or reddish-black streaks Petals yellow, with dark streaks Stamens Filaments fused, approximately long, shorter than the petals Filaments fused, from long, shorter than the petals Filaments fused, from long, shorter than the petals
References
External links