pTheophrastus of Eresus in Lesbos, born about 370 BCE, is the author of the most important botanical works that have survived from classical antiquity. He was in turn student, collaborator, and successor of Aristotle. Like his predecessor he was interested in all aspects of human knowledge and experience, especially natural science. His writings on plants form a counterpart to Aristotle's zoological works. pIn the iEnquiry into Plantsi Theophrastus classifies and describes varieties--covering trees, plants of particular regions, shrubs, herbaceous plants, and cereals in the last of the nine books he focuses on plant juices and medicinal properties of herbs. The Loeb Classical Library edition is in two volumes the second contains two additional treatises iOn Odoursi and iWeather Signs.i pIn iDe Causis Plantarumi Theophrastus turns to plant physiology. Books One and Two are concerned with generation, sprouting, flowering and fruiting, and the effects of climate. In Books Three and Four T