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GRASS-POLY Lythrum hyssopifolium (Lythraceae) Height to 25cm. Upright hairless annual that sometimes branches at the base. Favours winter-wet hollows in arable fields or on disturbed ground. FLOWERS are 4-5mm across, pink and 6-parted; borne in leaf axils up stem (Jun-Aug). FRUITS are capsules. LEAVES are narrow (grass-like) and alternate. STATUS-Rare; in Cambs, Hants and Dorset only.