安徽蓼属(Polygonum L.)植物的研究

蓼属(Polygonum L.)为本省蓼科植物中种类最多的一属。作者就其形态特征、系统分类、生态地理分布、区系特点及资源利用等方面进行了研究;现记载安徽蓼属植物共42种(包括变种),其中5种1变种为本省分布新记录,属下分为7组,各组在水平分布与垂直分布方面显示一定规律性;区系分析表明安徽蓼属80％的种为北温带类型,与邻省及邻国日本关系密切,与我国其他地区也有一定程度的联系,区系组成反映本省处于南北植物交汇的过渡地带特点。

A STUDY ON POLYGONUM L.OF ANHUI

In this paper the morphological characters, classification, ecological and geographical distribution, flora characters and economic importance of the genus Polygonum, a biggest one in the family Polygonaceae in Anhui, were studied. So far 42 species (including varieties) of the genus have been recorded in the province, among them P. sagittifolium, P. sinicum, P. convolvulus,P, dentato-alatum, P. conspicuum andP. longisetum vat. rotundatum were recorded for the first time in Anhui. Some own ideas the author has suggested for a few species people had the divergence of view and one or two species being left for luther consideration. All species of Polygonum in Anhui are classified into 7 sections, each shows a certain law in horizontal and vertical distribution. By analysis of the Polygonum flora of Anhui it is shown that 80% species are the type of floristic area of the north temperate zone. The flora is closely ralated with the neighbouring provinces Zhejiang, Hubei, Jiangsu Jiangxi, then Henan, Fujian and the neighbouring country Japan. Being due to some species having got together from the north and the south of the country in this province, the composition of the flora indicates the feature of transition zone.