根据观察结果，对导管分子穿孔板的演化及黄三七属植物的系统位置进行了分析。
The evolution of the perforation plates of the vessel elements and the systematic position of genus Souliea were discussed in the paper based on the present observation .
含笑属植物的导管分子大多具有梯状穿孔板，仅有一种可看到单穿孔板。
In contrast, most of the Michelia species possess scalariform perforation plates and only one with simple perforation.
在导管分子中，存在着梯状穿孔板、网状穿孔板、混合型穿孔板和单穿孔板；
The form of the perforation plates in the typical vessels are various, divide into several subtypes:scalariform perforation plates, reticulate perforation plates.
木莲属的所有种中都有具梯状穿孔板的导管分子，但在少数种中偶然可见到单穿孔。
Manglietia species all have scalariform perforation plates, only a few also have simple perforations.
本文对毛茛科38属88种植物导管分子的穿孔板结构进行了比较观察。
This paper deals with comparative studies of the perforation structures of vessel elements in 88 species of 38 genera of Ranunculaceae.
导管分子很短，单穿孔，无穿孔的输水分子具单纹孔；
Tracheal element is very short, sheet is perforative, have odd grain opening without perforative element is defeated by water;
导管分子很短，单穿孔，无穿孔的输水分子具单纹孔；
Tracheal element is very short, sheet is perforative, have odd grain opening without perforative element is defeated by water;
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