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苔与藓的区别

2010-12-03 17:52:43| 分类：植物图话及生态环 | 标签： |举报 |字号大中小订阅

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       苔藓植物全世界约有23,000种，包括苔纲(Hepaticae)和藓纲（Musci）苔藓植物一般较矮小，喜阴暗潮湿的环境。

       苔 纲：多为扁平的叶状体，有背腹之分；体内无维管组织；根由单细胞组成的假根。 多生子阴湿的土地、岩石和潮湿的树干上。       藓 纲：有茎、叶的分化，茎内具中轴，但无维管组织；根由单列细胞组成的分枝假根。比苔类植物耐低温，在温带、寒带、高山冻原、森林、沼泽、常能形成大片群落。

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