【摘要】 中国东北地区是我国北方石松类和蕨类植物最丰富地区，对其区系的系统研究是区域石松类和蕨类植物资源管理的基础和前提。本研究在文献分析和标本查阅的基础上，探讨了东北地区石松类和蕨类植物区系及其特征。结果表明：(1)东北地区有石松类和蕨类植物19科48属141种(含种下分类群)。(2)东北地区石松类和蕨类植物区系属温带性质，且包含一定的热带和寒带性质的成分，体现其地理成分的复杂性。(3)优势科属明显，7个优势科的种数占全部种数的63.83%,6个优势属的种数占全部种数的46.10%；单种和寡种属较多，占总属数的83.33%，所包含的种却只占总种数的47.52%。(4)东北地区是木贼科(Equisetaceae)在中国的重要分布区。(5)东北地区分布有石松类和蕨类植物的中国特有种30种，东北地区特有种4种(长白石杉Huperzia asiatica、宽鳞蹄盖蕨Athyrium yokoscense var.kirismaense、长齿对囊蕨Deparia pycnosora var.longidens和长白山金星蕨Parathelypteris changbaishanensis)。本研究是东北地区植物区系研究的必要补充，具有重要的理论和实践意义。更多还原

【Abstract】 Northeast China is the richest area of lycophytes and ferns in northern China,and systematic study on its flora is the basis and premise of regional lycophyte and fern resource management.In this study,based on literature analysis and specimen review,the flora and characteristics of lycophytes and ferns in Northeast China were explored.The results showed that:(1)There were 141 taxa(species and intraspecific taxa),which belonged to 48 genera of 19 families.(2)The flora of lycophytes and fern in Northeast China was temperate,with ancient tropical origins and cold zone components,which indicated the complexity of its geographical composition.(3)Predominant families and genera were obvious:the number of species in seven dominant families accounted for63.83% of the total number of species,and six dominant genera for 46.10%.There were also many monotypic genera and oligotypic genera with two or three species,accounting for 83.33% of the total number of genera,but47.52% of the total number of species.(4)Northeast China was an important distribution area of Equisetaceae in China.(5)A total of 30 Chinese endemic species of lycophytes and ferns were distributed in Northeast China,of which four species were endemic to Northeast China(Huperzia asiatica,Athyrium yokoscense var.kirismaense,Deparia pycnosora var.longidens and Parathelypteris changbaishanensis).This study provided a necessary supplement to the study of flora in Northeast China,and had important theoretical and practical significance.更多还原