Common name:
Perforate st john's-wort
Family:
Scientific name:
Hypericum perforatum
Main flower color:
Range:
All of the UK; least common in northern Scotland
Height:
Up to 80 cm
Habitat:
Grassland, open woodland, roadsides, especially on calcareous or sandy soils
Flowers:
Up to 20 mm in diameter; five bright yellow petals, with black dots under the margins, and five pointed green sepals. Flowers form at the tip of the stem branches, which are round in cross-section and lined with two opposite ridges
Leaves:
Opposite, hairless, narrowly oblong, up to 2 cm in length, blunt at the tip, with both small translucent dots and larger, black dots
Season:
June to September
Rarity:
★★★★★
