Most dangerous plants in pictures: The world's most dangerous, and deadly, plants including the Gympie-gympie stinging tree, Tobacco and Castor oil plant
Top 10 most common poisonous plants: How to identify
UK poisonous plants: The dangerous plants lurking in plain sight - BBC News
Poisonous and Non-poisonous Plants: An Illustrated List | Poison Control
Giant hogweed – possibly the UK's most dangerous plant - Sheffield & Rotherham Wildlife Trust