| 1. | They encompass seven distinct arboreta organized into 50 sections.
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| 2. | Operating responsibilities were given to the Los Angeles County Department of Arboreta and Botanic Gardens.
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| 3. | Hays received the 1996 Professional Citation Award from the American Association of Botanical Gardens and Arboreta.
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| 4. | Severe bombing during World War II badly damaged the arboreta, but they have since recovered.
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| 5. | The species was never widely introduced to the United States, but is represented at several arboreta.
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| 6. | Arboreta are designated as Levels I through IV based on the number of different tree species they contain.
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| 7. | Twenty arboreta have received such recognition to date, including arboreta in France, Belgium, and Korea.
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| 8. | Twenty arboreta have received such recognition to date, including arboreta in France, Belgium, and Korea.
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| 9. | "' Bedgebury National Pinetum "'at National Arboretum at Westonbirt, comprises the UK National Arboreta.
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| 10. | The park became a model for the establishment of many now-important arboreta such as in Prohonice and Konopiat.
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