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| | The Botanical Garden of the University of Naples (Site not responding. Last check: 2007-11-02) |
 | | The class Cycadopsida is represented by the genera Cycas, Encephalartos, Dioon, Zamia, Macrozamia, Ceratozamia. |
 | | The only living species of Ginkgoopsida, Ginkgo biloba, is in the collections, and there are several species of Ephedra, representing the Gnetopsida. |
 | | The majority of the plants in this area belong to the class Pinopsida. |
| www.ortobotanico.unina.it /StoriaEn/storia_eng.htm (3599 words) |
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