英语语法分析

There are many ancient geographical elements, such as Magnoliaceae and Illiciaceae.

植物区系有许多古老的类型，如木兰科、八角科等。

The comparative anatomical structure of leaves of 11 species in 6 genera in the Magnoliaceae of China was studied.

对国产6属11种木兰科植物叶片的结构进行了比较解剖学研究。

Of these species the majority belong to the families of Magnoliaceae, Lauraceae, Rosaceae, Rutaceae, Oleaceae, and Leguminosae .

种类较多的科有术兰科、樟科、蔷薇科、芸香料，木犀科， 豆科等。