No further knowledge was gained during the Middle Ages though Europe was through the Arab reign confronted with the works and thoughts of antiquity. His work had a large influence on Western scientific literature. The ideas of antiquity became popular again during the Renaissance . Decisive contributions on botany were made by the attempt to find a natural system for the great variety of plant species. Since the 16th century became physiology a topic of botany.
Botany is the science of plants.
All these are certainly aspects of science, but they do not present the whole picture. Nonetheless science might be defined as an intellectual analysis of a given subject. It is the attempt to conclude from single observations to a general validity, to extrapolate from known to unknown and to have a look at different arguments. Plant science has a long history. Misinterpretation of results and corrections belong to the everyday-life of science.