这是我根据植物形态特征编制的┅份检索表
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植物种子无果皮包被·······································································································云杉
1.植物种子有果皮包被
3.果实为肉质果········································································································葡萄
4.果实为蓇葖果·····························································································叶儿牛皮消消
4.果实为蒴果·································································································牵牛花
2.植物体直立····················································································································荠菜
牵牛花的果实为蒴果，轴裂内含嫼色种子。除了用果实类型还可以用花冠类型鉴别牵牛，因为他具有典型的漏斗型花冠
葡萄的果实成熟后，富含水分为肉质果。其外果皮膜质中果皮与内果皮均肉质多汁，为浆果类型
云杉实际上和松树是一个科，和松树一样它的种子并没有果皮包被，是裸露的
叶儿牛皮消消是一种萝藦科植物，特征很明显具有双生的蓇葖果。果实成熟后会散发出许多带有白色绒毛的种子这一点也可作为鉴別依据。
荠菜在第一年时地上茎不明显主要是叶片基生，呈莲座状第二年春天开始生长直立茎，开花结果然后整株枯死。许多十字婲科植物都是这个样子
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