Editing Hypericum perforatum (section)

===Similar species===
''[[Hypericum maculatum]]'' is visually similar to ''Hypericum perforatum;'' however, its stems have four ridges instead of two and are also hollow. In addition, its leaves have fewer translucent glands and more dark glands. ''H. maculatum'' is native to the Old World but has also been introduced to North America.<ref name="FSControl" />

In North America several native species may be confused with ''Hypericum perforatum''. ''[[Hypericum anagalloides]]'' is a low-growing creeping plant with rounder leaves and fewer stamens. ''[[Hypericum boreale]]'' is a smaller plant with more delicate flowers. ''[[Hypericum canadense]]'' has smaller flowers with sepals that show between the petals. ''[[Hypericum concinnum]]'' has flowers with petals that bend backward at the tip and also has much narrower, gray-green leaves. Growing in [[Riparian zone|riparian]] areas along rivers, ''[[Hypericum ellipticum]]'' has wider leaves with a more elliptic shape. ''[[Hypericum scouleri]]'' has leaves that are broader at the base and also thicker. All except for ''H. concinnum'' grow in environments that are generally more moist than where ''H. perforatum'' is found.<ref name="FSControl" />