. Blue Ridge Mountains) and the Ozarks. A number of genera ("Sarracenia", "Uvularia" etc.) are shared only with the Canadian floristic province of the Circumboreal region. Moreover, as has long been noted (e.g. by Joseph Gerhard Zuccarini and especially by Asa Gray), a large number of relict genera ("Liriodendron", "Hamamelis", "Stewartia" etc.) are shared with the relatively distant Eastern Asiatic Region (comprising Japan and the east of China) and sometimes Southeast Asia. R. F