泡桐 Paulownia tomentosa Steud是我国北方常见的速生绿化行道树和材木。在生活中常会见到有些泡桐的个别枝条上腋芽和不定芽大量萌发 ,丛生许多细弱小枝 ,节间变短 ,叶序紊乱 ,叶片小、黄、薄且皱缩 ,小枝上又发出许多更小的枝 ,重复数次 ,至秋天常簇生成团 ,小枝愈来愈细弱 Paulownia Paulownia tomentosa Steud is a common fast-growing green roadside tree and timber in northern China. In life often see some Paulownia shoots of axillary buds and adventitious buds a large number of germination, clusters of many fine twigs, internodes shorter, leaf disorder, leaves small, yellow, thin and shrunken, the branch has issued many smaller Branches, repeated several times, often to clusters of autumn clusters, twigs increasingly weak