Abstract
P. A. L. Savatier (1830-1891), the French medical doctor of the Yokosuka naval dockyard, had collected many botanical specimens in Japan, especially in Yokosuka, Yokohama and other regions of Kanagawa Prefecture. We examined Savatier's collection for the presence of locally extinct plant specimen and for made a detailed observation of its identification at the Museum National d'Histoire Naturelle (MNHM) in France. As a result, we recognized 12 species those are locally extinct in Kanagawa Prefecture. Those materials are here reported with their images and some botanical notes.