| 11. | Another plant that contains substances readily convertible to progesterone is " Dioscorea pseudojaponica " native to Taiwan.
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| 12. | You are referring to the air potato, " Dioscorea bulbifera ", a native of the tropics.
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| 13. | Among the more notable of these are " Dioscorea villosa " and " Dioscorea polygonoides ".
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| 14. | Among the more notable of these are " Dioscorea villosa " and " Dioscorea polygonoides ".
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| 15. | In Japan, this species is sometimes mistakenly called Japanese mountain yam, which refers to the native Dioscorea japonica.
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| 16. | "Dioscorea mexicana " ranges from the state of San Luis Potos?in northeastern Mexico south to Panama.
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| 17. | Figure 2 : Major synthetic steps leading to dioscorine from trigonelline precursor in "'Dioscorea hispida "'
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| 18. | Many other " Dioscorea " species of the yam family contain steroidal substances from which progesterone can be produced.
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| 19. | "Dioscorea floridana " is a perennial vine twining over other vegetation and spreading by means of yellow underground rhizomes.
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| 20. | Yams are in the genus Dioscorea and are an important food source in the tropics but are seldom grown in the United States.
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