求翻译：进一步对种间叶表皮特征观察和研究，发现它们的叶表皮形态特征在许多方面是相同或相似的，表明它们是一个亲缘关系较密切的自然类群，但是在属间、种间及变种间也存在较明显的差异。是什么意思？

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Further to a leaf epidermal features observation and research, found that the leaf epidermis them morphological characteristics in many ways it is the same or similar, indicating that they are a relatively close relationship of the natural type of cluster, but in the case of inter-agency and inter-a

Further to the inter-species leaf epidermis characteristic observation and the research, discovered their leaf epidermis shape characteristic in many aspects is same or similar, indicated they are a blood relationship relations close natural group, but in being, inter-species and the variety also ha

Further the kind of leaf epidermal characteristics between observation and study, found their characters of leaf epidermis is in many ways the same, or similar, indicating that they are a relationship closer natural groups, nevertheless intergeneric and interspecific and there is a more obvious diff

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