1 Written by different authors at different periods. 2 Who were the different authors who wrote this? 3 HE generated more than 500 medicinal plants known at that time.

1 Greek Historia Plantarium 2 1. Theophrastus - 4th century BC 2. Diocles of Carystus – 3rd century BC 3. Krateuas – 1st century BC 3 Theophrastus, the "Father of Botany"