A number of invasive species are listed in Schedule 9 of the ... Curly waterweed (Lagarosiphon major) Floating pennywort (Hydrocotyle ranunculoides) Giant hogweed (Heracleum mantegazzianum ...

Less than 1% of the Government’s biosecurity budget goes on invasive ... tackling non-native species on the ground – which range from Himalayan balsam and floating pennywort choking waterways ...

image: Floating pennywort on the River Wey, Weybridge, UK view more Credit: Djami Djeddour CABI CABI scientists have carried out a study which reveals invasive non-native species (INNS) – such ...