If this article is correct then as many as 25% of flowering plants could face extinction. That’s according to scientists who say one in four species is under threat of becoming extinct including some which may not have been discovered yet. The research which was recently published in the journal Proceedings of the Royal Society B follows similar studies which say that one in five of all mammals, nearly one in three amphibians and one in eight birds are in danger of being wiped out completely. The study first looked at the number of flowering plants and the rate that new species are being discovered. From this they concluded that on top of the 352,282 species of known plants there are potentially between 10 and 20% more yet to be discovered. They then took into account the threats facing plants species such as habitat loss, development, groundwater and pollution. From this they concluded that between 27 and 33% of all flowering plants will be threatened with extinction.