关键词: 华夏古陆, 华夏植物区系

Abstract: Cathaysisn Paleocontinent is neither the only paleocontinent nor theoldest one in China. The rock formation of the Sinian Period has not beendiscovered in Hainan so far. The Sinian Period does not cover an largearea in Guangdong. In the early phase of the Triassic Period, the land was basically an area of denudation of terrene in Northern China. Most areas south of Chang-jiang were shallow sea or epicontinental sea. In the phase of the Triassic Period, there were also some coal-cota-ining deposit horizon in the areas of Guangdong, where the sea and terrenealternatively dominated. Since the late Jurassic Period, there supposedly appeared some originalangiosperm in the area of northern China. According to references, theecological environment in northern China provided a good condition for thegrowth and development of the original angiosperm. From the CretaceousPeriod to Ice Age of the Ouaternary Period, the changing of the paleoge-ographical condition resulted in the survival and development of the angi-osperm and other plants in the area of southern China. Concerning paleogeography and flora, the hypothesis that "Sumatra wasone southernmost part of Cathaysian paleocontinent", and the Peninsula ofIndochna, Philippines, Kalimantan, and Iran were parts of Cathaysianplatform and Cathaysan flora seem to be very subjective assumptions, because they lack sufficient evidence. The essay focusses on the discussion of the definition and the scope ofthe Cathaysian Paleocontinent (or "the Platform of South China"), and onthe time and space of the Cathaysian Flora, as well as the origin of an-giosperm.

Key words: Cathaysian Paleocontinent, Cathaysian Flora