Today, 39 years ago, on July 14, 1986 (Lunar Calendar, June 8, 1986), the plant classifiers Wu Dean died. Wu Dean, a plant classifiers and gardeners. Beijing. Born on February 1, 1908, graduated from the Department of Biology of the University of Beijing. China Academy of Sciences Plant Research Institute researcher, Beijing Plant Gardens first director. In the early years engaged in plant resources investigation and plant samples collection work; has extensive in-depth research on the classification and distribution of China's higher seed plants, in particular Zhejiang, Zhejiang, Zhejiang; has more in-depth research on the origin and sort classification of plant gardens, plant domestication and chemical cultivation; has participated in the design of many Chinese plant gardens, promoted the development of plant gardens, is the