Abstract: The plants flora composition and characteristics of Polygonatum cyrtonema community in Fujian province were analyzed by sample plot investigation method. The results showed that there were 378 species of vascular plants in 254 genera and 100 families, belonging to 13 family areal types and 24 genus areal types. The community was dominated obviously by tropical geographical elements with 123 genera and 40 families, respectively 75.47% and 57.75% out of the family and genera of total plants. Among them, pantropical distribution (25 families, 45 genera) dominated in geographical elements with 47.17% of families and 21.13% of genera. Temperate distribution included 13 families and 87 genera, respectively occupying 24.53% and 40.85%. Endemic plants to China included 3 genera, proportion of 1.40%. The community put up those features of species rich, species diversity good, geographical elements complex, tropical elements obvious, temperate elements plentiful, ancient origin of flora and also existing lots of endemic elements.

Key words: Polygonatum cyrtonema, community, geographical elements, plants flora, flora index

摘要： 采用样地调查法对福建省野生多花黄精Polygonatum cyrtonema群落进行调查，分析其植物区系组成及特征。结果表明，多花黄精群落共有维管植物100科254属378种。种子植物83科232属，隶属13个科分布区类型和24个属分布区类型。其中，热带地理成分占优势，共40科123属，分别占科、属总数的75.47%和57.75%，泛热带分布成分最多(25科45属)，分别占科、属总数的47.17%、21.13%；温带分布包含13科87属，分别占科、属总数的24.53%和40.85%；中国特有属共3个，占总属数1.40%。体现出该群落植物种类丰富、物种多样性好、地理成分复杂、热带成分明显、温带成分较多、起源古老并兼具中国特有成分的特点。

关键词: 多花黄精, 群落, 植物区系, 地理成分, 区系指数