Swamp loosestrife

Decodon verticillatus -- Center for Aquatic and Invasive Plants

Decodon verticillatus

Native to Florida

Video ID segment (2-3 minutes / transcript below)
Adobe Flash needed to view video

Online image request form

swamp loosestrife swamp loosestrife swamp loosestrife swamp loosestrife swamp loosestrife swamp loosestrife

Video Transcript

Swamp loosestrife - Decodon verticillatus
Swamp loosestrife is a sprawling, woody herb that grows in swamps and swampy shores of streams and ponds. It occurs in north and central Florida. Swamp loosestrife flowers in the late summer and fall. This emersed plant is smallish and shrubby. Its lower stem is woody. Its upper stems are herbaceous. Swamp loosestrife leaves are opposite or in whorls of 3. Leaves are connected to the stem by short stalks. Its long leaves are lance-shaped with pointed tips. Typically they are 6 inches long and 2 inches wide. Swamp loosestrife flowers have short stalks and are purplish-pink with 5 to 7 petals. Flowers are about 1 inch across. Flower clusters occur at the leaf axles where the leaf meets the stem.

  • Swamp loosestrife is a smallish, shrub-like plant.
  • It has purplish-pink flowers that grow at the leaf axles.
  • Its leaves are opposite, long, and pointed.