北美红杉(Sequoia sempervirens(Lamb.)Endl.),俗称红杉、加利福尼亚红杉、常绿落羽杉、海岸红杉等。1972年美国前总统尼克松访华时赠送给我国红杉苗木一株(高2.4米),定植在杭州植物园,经过精心培育,生长良好,今已高达6.2米。杭州植物园采用扦插繁殖,已育出数千株苗木,分赠全国18个省市,89个单位试种。该树于1978年获得第一个未孕的球果; Sequoia sempervirens (Lamb.) Endl., Commonly known as Sequoia, California Sequoia, evergreen Taxodium distichum, Sequoia and so on. In 1972, when the former U.S. President Nixon visited China, he gave us a Sequoia seedling (2.4 meters high) and was planted in the Hangzhou Botanical Garden. After carefully nurtured and well grown, it has now reached a height of 6.2 meters. Hangzhou Botanical Garden using cutting propagation, has bred thousands of seedlings, points donated 18 provinces and cities nationwide, 89 units planted. The tree obtained the first non-pregnant cones in 1978;