The majority of the threatened species do not grow in environmentally protected locations. Tropical plants in the genus ...

One day the hellebores, non-native plants commonly called Lenten roses ... t yet realized how important native species — not exotic ones — are. Another non-native species, weeping willow ...

Using data from over 10,000 herbarium specimens, Smithsonian scientists uncover the urgent conservation needs of the plants, which are critical to tropical ecosystems Ella Jeffries Staff ...