Hypericum tetrapterum is a rhizomatous, glabrous perennial plant growing up to 1.2 m (3 ft 11 in) in height.

[1][3]: 340  The stems are square in cross section, with conspicuous wings at the corners.

The leaves are in opposite pairs, simple and entire, and have many translucent glandular dots.

[3] Hypericum tetrapterum is native to temperate Europe, the Mediterranean basin countries of Europe, north Africa, and western Asia, and the Caucasus, Iraq, and Iran.

[2] It is common in damp habitats such as marshes, streamsides, open ditches, meadows, and springs.