Description: This native species is the rarest of the St. John's worts in Northern Ireland, being restricted to five sites (extinct now at three of these). It is and was found mainly on basic soils, in damp grassland or in woods. The main centre of distribution of this plant in Ireland is in Co. Dublin and adjacent counties.

In appearance this perennial species has the typical St. John's wort flower about half an inch or more across and of a pale yellow colour; blunt, oval, translucent-dotted leaves about 1-2 inches long on a smooth, hairy and generally unbranched stem up to about two or three feet tall.

All names: Hypericum hirsutum L.

Distribution Map from NBN: Hypericum hirsutum at National Biodiversity Network mapping facility, data for UK.

iNaturalist: Hypericum hirsutum at iNaturalist World Species Observations database.