| 1. | Or dioscorea macrostachya, from Mexico, which resembles a tortoise.
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| 2. | Their most staple food crop till present is yam ( Dioscorea spp ).
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| 3. | There are true yams ( Dioscorea species ) grown for food in tropical areas.
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| 4. | "Dioscorea sansibarensis " grows from a tuber up to 40 centimeters wide.
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| 5. | Yams are of the genus Dioscorea.
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| 6. | Miscel laneous food-crops growns also included potatoes, and suthni ( Dioscorea fasciculate ).
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| 7. | The air potato, " Dioscorea bulbifera, " is a native of the tropics.
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| 8. | Yams, however, are any plant species of the tropical genus " Dioscorea ".
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| 9. | "Dioscorea pentaphylla " is a prickly vine that twines counterclockwise around objects and other plants.
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| 10. | A : The air potato, " Dioscorea bulbifera, " is a native of the tropics.
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