Hypericum densiflorum

Hypericum densiflorum, also known as bushy St. John's wort or dense St. John's wort, is a perennial herb in the flowering plant family Hypericaceae native to North America. The specific epithet densiflorum is Latin, meaning "densely flowered", referring to the many-flowered cymes.

Description
Hypericum densiflorum is a densely branched shrub with coppery bark that grows between 0.5-2 m in height. The many slender branches are slightly angled and branchlets are two-edged. The branches bear linear leaves and axillary fascicles, the leaves being 1-2 in long and 0.15-0.3 in wide. Its yellow flowers are 1.2-1.7 cm wide and are borne on crowded compound cymes. The firm and narrow sepals are 2-5 mm long and the pedicels are .1-.4 in long. The capsules vary in shape from lanceolate to slenderly conic, with three carpels and three styles. The capsules are 3.5 - 6.5 mm long and 1.5 - 3 mm thick.

The plant flowers from July to September and fruits from early October to the end of autumn.

Habitat and distribution
Hypericum densiflorum occurs on acidic soils in moist and wet conditions, including stream, pond, and lake banks, seepage slopes, and wet meadows. It prefers sandy clay loam and occurs from sea level to 1000 m of elevation.

The shrub occurs throughout the eastern and southern United States though it grows far west as Texas and as far north as New York.

Ecology
H. densiflorum has been marked as a pollinator plant, supporting and attracting bees.