Common St. Johnswort

Hypericum perforatum

Family: St. Johnswort (Guttiferae)

Petal Arrangement: The star-shaped, regular flower of the St. Johnswort is composed of 5 petals organized around a tube-shaped flower head. The center of the flower is made up of many stamens clumped together.

Color: Yellow.

Leaf Arrangement: The best way to identify a member of the St. Johnswort Family is to pay special attention to the leaves. The leaves of this family are opposite and have many small dots all over them. If you use a hand lens you will be able to see these dots very clearly. The leaves are small and oval-shaped.

Size, Location, Season: The Common St. Johnswort grows between 30-90 cm. (1-3 ft.) tall. It can be found along roadsides, open fields and waste places from Maine south to Kansas, Indiana and Pennsylvania. June-September.\

** Found at the edge of Sachar Woods, Brandeis University, Waltham Ma.

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