An “alien plant” fossil discovered 55 years ago just outside of an abandoned town in Utah has no relation to any currently existing or extinct species, scientists revealed in a study last month.

The spread of species beyond their native habitat is a human-made environmental change on a global scale. Among vascular plants, over 16,000 species have now permanently settled in foreign countries.

ILLUSTRATIONS OF ALIEN PLANTS OF THE BRITISH ISLES : INCORPORATING ARTWORK ORIGINALLY PREPARED FOR D MCCLINTOCKS A NEW ILLUSTRATED BRITISH FLORA VOL 3 EJ CLEMENT DPJ SMITH IR THIRLWELL WITH DRAWINGS ...