Hypericum prolificum, known as shrubby St. John's wort, is a deciduous shrub in the genus Hypericum. It was named for its "prolific" number of stamens.
Hypericum prolificum is a shrub growing up to 2m (07feet) tall with elliptic to oblanceolate leaves up to 70mm long and 15mm broad.[1] The flowerheads have between 1 and 9 flowers, each NaNmm across with 5 golden yellow petals and numerous stamens.[1] The ovary is usually three-parted, though may have up to five parts in some individuals.[1]
Hypericum prolificum is native to the central and eastern United States and Ontario. Habitats include riparian areas, slopes, thickets, swamp edges, and oak woodlands.