裸子植物门
- 网络Gymnospermae;gymnosperm
![裸子植物门](../cache/1179577.jpg)
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秦岭种子植物补遗&裸子植物门和被子植物门的单子叶植物
Addenda on seed plants of Qinling Mountains & Gymnospermae and Monocotyledonae of Angiospermae
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种子不为子房所包被的裸子植物门。
Plants of the class Gymnospermae having seeds not enclosed in an ovary .
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银杏是银杏目植物的唯一成员,属裸子植物门,最早能追溯到2亿7千万年前的二叠纪。
The Ginkgo tree is the only living representative of the order Ginkgoales , a group of gymnosperms dating back to 270 million years ago in the Permian period .