Among Flowering Plants, Thousands of Evolutionary Oddities at Risk of Extinction

A new scientific study has identified thousands of flowering plants that belong to rare and ancient family lines. These plants are in urgent need of protection. The research focuses on species that have very few surviving relatives left in the world. One famous example is the ginkgo tree. Scientists believe the ginkgo is the last remaining member of a line that goes back more than 300 million years. This tree occupies a long and isolated branch on the tree of life. If the ginkgo were to go extinct, scientists say that a significant part of human knowledge about evolutionary history would be lost forever.

To understand the scale of this problem, scientists evaluated every single species of flowering plant. There are more than 330,000 of these species in existence. They looked at two main factors: how distinct each species is and how close it is to extinction. For plants that had not been formally assessed by experts yet, the team used advanced computer modeling. This method helped them determine the level of vulnerability for these unlisted plants. They wanted to see which species were unique enough to be considered irreplaceable treasures.

From this massive analysis, scientists made a startling discovery. They determined that more than 20 percent of the total evolutionary history of all flowering plants is at risk of being erased. The research was published in the scientific journal Science in 2024. The study identified nearly 10,000 species that should be prioritized for conservation efforts. These 10,000 plants were chosen because they have a unique history that is now threatened. Saving them is about saving a specific slice of our planet's deep past.

Some of the species most in need of conservation are known for their strange appearance or smell. The list includes the infamously smelly "corpse flower" found in Sumatra. This plant is famous for releasing a scent that smells like rotting flesh to attract pollinators. Another example is the "jellyfish tree" from the Seychelles, named for its unusual shape. The study also highlighted the "salad plant" of Saint Helena. Saint Helena is a tiny island located in the South Atlantic Ocean. These plants are odd and wonderful, but their survival is fragile.