Botanists identify 33 global ‘dark spots’ with thousands of unknown plants

Kew study reveals areas with at least 100,000 undiscovered plant species - most likely to be under threat of extinction

Botanists have identified 33 dark spots" around the world where thousands of plant species are probably waiting to be discovered, according to new research.

From a palm tree in Borneo that flowers underground to a Malagasy orchid that spends its life growing on other plants, researchers are still making dozens of new species discoveries every year.