【摘要】 通过扫描电镜(SEM)观察了16种国产丛藓科(Pottiaceae)植物蒴齿的形态特征,结果表明:丛藓科植物的蒴齿为单齿类,齿条1～3回左旋或直立,多具基膜,并密被疣,这些共同特征说明了丛藓科植物蒴齿具有一定的相似性;但在齿条形状和旋转情况及基膜特征等方面又有区别,明显分为3种类型,显示了不同属、种间的遗传分化。最后,本文还讨论了蒴齿特征与干旱环境的适应。更多还原

【Abstract】 The peristome morphology of 16 species of the family Pottiaceae was observed by scanning electron microscope(SEM).The results show that the peristomes of these species are similar.They are haplolepideae.Peristome teeth are 1-3 sinistrorse circles or erect,basal membrane is present and densely covered with small papillae.While based on the differences of shape and rotation of peristome teeth and characteristics of basal membrane,three styles of peristome can be distinguished.It shows the hereditary differentiation of genus and species.This paper also discusses the adaptation of peristome morphology to the xerophytic environment.更多还原