| 1. | The center of diversity is in the Caribbean, Central America, and Mexico.
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| 2. | The center of diversity is in rainforests, reaching a height of.
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| 3. | Its center of diversity is Tenerife, with seven species occurring on this island.
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| 4. | The center of origin is also considered the center of diversity.
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| 5. | The center of diversity lies in southern Africa ( Cape Floristic Region ).
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| 6. | The center of diversity of the genus is in the Alps.
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| 7. | It is widespread across Europe and Asia, with a center of diversity in China.
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| 8. | The center of diversity is in the Cape Floristic Region.
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| 9. | Most species originate from East Asia and the center of diversity is in China.
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| 10. | The center of diversity for the genus is New Guinea.
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