Most species of the famously large Rafflesia flower, which has long captured the imagination with its enormous speckled red petals, are now at risk of extinction, a new research has warned.

You'd have to be like Indiana Jones and hack your way through a thick jungle if you want to find the rafflesia – and even then, this beautiful flower doesn’t just grow on trees, because it ...

By feeding on its host, rafflesia is able to produce the world's biggest flower, a metre across ... vicious spines which protect it from plant-eating animals. On reaching the surface the bud ...