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. An accepted opion is one, that at a certain time gains wide approval. It has to be in accord with related opinions and observations and it must resist almost all attempts to prove it wrong. The history of science is the history of a continuous process of learning. The occupation with plants and the development of human culture cannot be separated.