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PERFORATE ST JOHN’S-WORT Hypericum perforatum (Clusiaceae) Height to 80cm. Upright, hairless perennial with 2-lined stems. Found in grassland, scrub and open woodland, usually on calcareous soils. FLOWERS are 2cm across, the deep yellow petals often with black marginal spots (Jun-Sep). FRUITS are dry capsules. LEAVES are oval with translucent spots; in opposite pairs. STATUS-Widespread; commonest in the S.