One-third of all known plant species are in botanic gardens
The world's botanic gardens contain at least 30 per cent of all known plant species, including 41 per cent of all those classed as "threatened", a new study revealed on Monday. Through analysing datasets compiled by Botanic Gardens Conservation International (BGCI), the team led by researchers from the University of Cambridge cross-referenced the working list of known plant species — currently sitting at 350,699 — with the species records of a third of botanic gardens on the planet, some 1,116 institutions. This provides a "minimum estimate" for the plant diversity held in botanic gardens, Xinhua quoted the team as saying. The study found that the global network of botanic gardens conserves living plants representing almost two-thirds of plant "genera" (the classification above species) and over 90 per cent of plant families. But the team also pointed out that there is a significant imbalance between temperate and tropical regions. Some...