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LARGE-FLOWERED HEMP-NETTLE Galeopsis speciosa (Lamiaceae) Height to 50cm. Attractive, branched and bristly-hairy annual with a robust appearance. Grows in cultivated land and on disturbed ground, mainly on peaty soils. FLOWERS are 25-35mm long and yellow with purple on the lower lip, and a corolla tube twice the length of the calyx; borne in whorls (Jul-Sep). FRUITS are nutlets. LEAVES are ovate, toothed and stalked.