
A common native hairless perennial with shoots up to three feet tall arising from a creeping rhizome; stems are square in cross-section and leaves about 3/4 inch long, with translucent glandular dots. Flowers are of the typical St. John's wort form and are about 3/4 inch across.
Found in open woodland, hedgebanks, grassland, roadside verges, railway and road embankments etc.
All Northern Ireland plants belong to the subspecies obtusiusculum.
All names: Hypericum maculatum Crantz; Hypericum dubium Leers; Hypericum quadrangulum auct.
NBN Atlas mapping: Species account : NBN Atlas UK Species Observations database
iNaturalist: Species account : iNaturalist World Species Observations database