Seasonal Wild Flowers

Slender St. John's-wort

Hypericum pulchrum

Hypericaceae

June to August

It is found throughout the country except for parts of the

East Midlands.

See the BSBI distribution map for Slender St. John's-wort

It grows in heaths, scrub and open woods.

Slender St. John’s-wort is a native, attractive, perennial

herb growing up to 60cm.

Flowers are up to 18mm, with 5 bright yellow petals.

The undersides of the petals are splashed with red (seen in

the red buds), and edged with black dots (glands).

There are numerous stamens with yellow filaments and

orange anthers.

There are 3 to 5 styles.

The 5 sepals are also edged with black spots.

Leaves are heart-shaped; half clasping the stems and up

to 1cm.

Stems are round, un-ridged and often reddish.

Slender St. John's-wort,

Powerstock Common, Dorset

Flowers and flower-buds

Red streaks on petals - seen from below

Black glands on sepals and petals

Leaves half clasping round, red stems