【摘要】 小陇山位于秦岭的西端 ,地处亚热带向暖温带的过渡区域 ,种子植物区系组成丰富 ,有种子植物 1 5 0科 80 5属 2 4 0 0多种。 1 0 0种以上的大科有菊科 ,蔷薇科、禾本科、蝶形花科 ,5 0～1 0 0种的有毛莨科、百合科、伞形科、莎草科、唇形科、忍冬科等 ,这些科属大多为温带性质。该区系地理成分复杂 ,具有 1 5个种子植物属的分布类型 ,表明了与世界各地区植物区系的联系程度。温带分布的类型占绝对优势 ,由于小陇山地理位置特殊 ,决定了其成为多种地理成分的汇集地 ,区系中单种科、少种科属及古特有属相对丰富 ,孓遗植物和珍稀植物较多 ,说明了该区系的古老性。更多还原

【Abstract】 Xiaolong Mountains there were 2 400 species of seed plants belonging to 150 families and 805 genera.The large familiesof plants (100 species) there were Compositae?Rosaceae?Gramincae ?Papilionaceae,50～100 of plants there were Ranuncuaceae?Liliaceae?Umbelliferae?Cyperaceae?Labiatae?Caprifoliaceae and the quality of them mostly is temperate.There were 15 distribution type of genera of seed plants in Xiaolong Mountains.It was dear from the figures that North temperate elements play an important role in the flora and vegetation with characteristics of the Temperate Zone to the flora.In addition the abundant monolypic species and oligotypic species and relic endemic to China also indicated characteritics of ancient in origin.更多还原