Diversity and differentiation of the plants in the limestone areas in the Sino-Japanese floristic region

为了更好地了解中日植物区系石灰岩地区植物区系的多样性和分异，我们在中国西南部以及台湾和缅甸进行了实地考察。通过这次考察，共准备了3000多个标本标本馆。还获得了用于分子系统发育研究和染色体数目研究的样本。标本被带回日本，并与通过以前的活动收集的标本一起进行检查。杜氏标本是由中国同行中国在昆明植物研究所研究的。结果，对1995年和1996年从石灰岩地区获得的标本进行了鉴定并编入了一份清单。发现中国天南星属2新种，缅甸天南星属1新种。许多其他新物种被识别出来，很快就会被描述出来。在等位酶多态性和分子系统发育分析的基础上，对菊科、木兰科、马兜铃科、天南星科、百里香科、半边莲、金莲科、马兜铃属、水苏属等属植物进行了群体分析。尽管石灰岩地区的范围很广，而且相当连续，但很明显，这些植物是局部分化的。

For a batter understanding of the diversity and differentiation of the flora in the limestone areas of the Sino-Japanese floristic region, field expeditions were made in the southwestern China and also Taiwan and Myanma. Through the expeditions more than 3000 herbarium specimens were prepared. The samples for molecular phylogenetic studies and the study of chromosome numbers were also obtained. Specimens were brought back to Japan and examined together with those gathered through previous activities. Dulicate specimens were studied in the Kunming Institute of Botany, China, by the Chinese counterpart. As the results, specimens obtained from the limestone areas during 1995 and 96 were identified and complied into a list. Two new species of Arisaema from China and one new species of Typhonioum from Myanmar were found. Many other new species were recoginizxed and will be described soon. Population analysis based on the allozyme polymorphism and molecular phylogenetic analysis were made on (Hepaticae), Magnoliaceae, Pedicularis, Araceae, Thymelaeaceae, Lobelia, Aucuba, Aristolochia and Stachyurus. Although the limestone areas extend widely and rather continuously, it is evident that the plants are locally differentiated.