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白龙江流域木本植物种类丰富，共有木本植物９０７ 种（含种下等级），分别隶属于１０３ 科，２８１ 属。其中中国植物特有属２０ 属，白龙江土著特有种２５ 个。本文较为详细的分析了本区系属的主要地理成分，并通过不同种的地理分布和化石资料，进一步阐明了本区系的基本特征。
There are a total of 907 species of woody plants in Bailongjiang River Basin, belonging to 103 families and 281 genera. Among them, there are 20 genera endemic to China and 25 indigenous endemic species in Bailongjiang. In this paper, we analyze the main geographical elements in this area in more detail and further clarify the basic characteristics of this area through different kinds of geographical distribution and fossil data.