Manglietia species all have scalariform perforation plates, only a few also have simple perforations.
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。
2
In contrast, most of the Michelia species possess scalariform perforation plates and only one with simple perforation.
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。
3
Results There were 3 types of vessel elements, scalariform vessel, reticulated vessel and pitted vessel, the perforation plates were simple perforation plate.