Charles Elliott reviews The Naming of Names by Anna Pavord, in Literary Review:

Elliot_12_05Around two thousand years ago, a Greek doctor named Dioscorides described a plant that he considered to be medically useful. It was called ‘crocodilium’, he said, and it was supposed to help people who were splenetic. When boiled and drunk, it ’causes copious bleeding at the nose’. Other characteristics, apart from the shape of its roots and seeds, and the fact that it grew in ‘wooded places’, were unfortunately obscure.

What exactly was crocodilium? And why should anyone care? As Anna Pavord splendidly makes plain in this elegant and scholarly history of taxonomy, a science usually regarded as even dismaller than economics, such questions are far from insignificant. Exactly which plant is which, and what its relationship is to other plants, are matters central to our understanding of the world we live in. Crocodilium is a case in point, though on the whole a depressing one. The confusion surrounding it, as with so many of the plants mentioned by Dioscorides, lasted for hundreds and hundreds of years. Even when the sixteenth-century Italian botanist Luca Ghini finally managed to pin it down as being most likely a species of Eryngium (at the same time apologising for not drinking an infusion to see whether it really did make his nose bleed), he was taking only a modest step out of the chaos.

More here.