绒毛ＦｒａｘｉｎｕｓｖｅｌｕｔｉｎａＴｏｒｒ.及美国红Ｆ .ｐｅｎｎｓｙｌｖａｎｉ ｃａＭａｒｓｈ .都是木犀科属树种 ,原产北美 ,二十世纪初引入我国 ,现为自鸭绿江口至甬江口滨海盐碱地区的主要造林树种之一。由于最早引进的两树种的采种母树距离较近 ,往往对其混 Fusarium FraxinusvelutinaTorr. And the United States F. Pennsylvani caMarsh. Are all species of Oleaceae, native to North America, introduced to China in the early twentieth century, is now from the Yalu River estuary to Yongjiang estuary coastal saline-alkali zone one of the main afforestation species. Due to the earliest introduction of the two species of seed trees close to the mother trees, often mixed