To provide fundamental information and a t heoretical basis for protection and management of plant resources on Mount Jiangjun, floristic diversity and fundamental characteristics of seed plants were determined. Results showed 394 species of seed plants belonging to 95 families and 274 genera. Gymnosperms accounted for two species distributed in two genera and two families. Angiosperms consisted of the other 93 families, 272 genera, and 392 species with monocotyledons accounting for 16 families, 63 genera, and 84 species, and di-cotyledons consisting of the remaining 77 families, 209 genera, and 308 species. Dicotyledons had 110 species of epipetalousb elonging to 20 families and 67 genera, and 189 species of sympetalous belonging to 57 families and 142 genera. The depauperate family (genus) and single species family (genus) occupied a relatively large proportion of the flora;whereas, large families (genera) and less larger families (genera) were absent. Analysis of characterized families, R/T, and floristic compositions of families and genera demonstrated: 1 ) an abundance of floristic compositions, 2) obvious tropical elements influenced by temperate elements, 3) complex geographi-cal components with flora being extensively connected to most floras of the world, and 4 ) existence of few en-demic plants. Thus, phanerophytes and chamaephytes most likely took up a dominant position with therophytes occupying the lowest percentage of the flora. [Ch, 6 tab. 23 ref.]%为了给南京将军山植物资源的保护和管理等提供基础资料和理论依据,探究了将军山种子植物区系多样性及基本特征.根据野外实地调查,初步统计到南京将军山种子植物共有95科274属394种,其中裸子植物2科2属2种,被子植物93科272属392种.在被子植物中,单子叶植物16科63属84种,双子叶植物77科209属308种;离瓣花植物20科67属110种,合瓣花植物57科142属189种.该区种子植物以寡种科(属)、 单种科(属)为主,缺乏大科(属)、 较大科(属).对种子植物表征科、 热带亚热带属与温带属的比值(R/T)以及科属区系地理成分的分析表明:①种子植物区系组成比较丰富;②区系具有明显的热带性质,同时受温带成分的影响;③地理成分复杂,区系联系广泛;④特有程度较低.该区种子植物以高位芽植物和地上芽植物种类为主,地下芽植物种类最少.表6参23
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