Family - Clusiaceae
Common Name - Common St. John's Wort
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An erect plant with bright yellow flowers. The 5 petals are more than twice the length of the 5 sepals. The sepals are narrow, pointed, untoothed and evenly sized. Other species of Hypericum differ. The numerous leaves have both black and translucent glands. These can be best seen when the leaf is held up against a light. The black glands are found particularly around the margins of the leaf and on the sepals. The translucent glands are numerous and fairly evenly spread across the leaf. The stem is rounded, except for 2 longitudinal ridges.
Description of Genus
Herbaceous and woody plants. Leaves opposite, often spotted with glands. The flowers are yellow and have 5 petals and 5 sepals. The fruit is either a capsule or berry.
On calcareous soils in hedgebanks, woods and grassland.
Widespread except in the far north. (See Map)
In flower during June, July, August and September.
The fruit is a capsule.
The flower is actinomorphic and is yellow in colour.
Names in other languages and countries
Chromosome Number (2N)