Lysimachia punctata L.
Lysimachia punctata L. var. verticillata (M. Bieb.) Klatt
Garden Loosestrife, Yellow Loosestrife, Circle Flower, Large Yellow Loosestrife
Garden loosestrife is native to Europe and western Asia, an has become naturalized in North America.
Identification: These plants are 18-36" (45-91 cm) tall, and up to 24" (60 cm) around. Leaves are in neat whorls, narrow, about 2" (5 cm) long. Multiple yellow star-shaped flowers, each about ¼-½" (8.3-12 mm) across, nestle among the upper leaves of each stem.
Lysimachia punctata at the Missouri Botanical Garden
Lysimachia punctata on plants.ces.ncsu.edu
Lysimachia punctata on the Connecticut Botanical Society's Connecticut wildflowers site
Lysimachia punctata in Paghat's Garden
Lysimachia punctata on Bjørn Rørslett/NN's Nature Photography site (photo taken in ultraviolet light)
Lysimachia punctata at Gymnosperms.org
Lysimachia punctata on eFloras
Lysimachia punctata description by Thomas H. Kent, last updated 2 Jan 2019.
Range: Zones 4-8: