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DIOSCOREA TRIFIDA - NAPI Common nameCush-cush, napi, yampee, Indian yam, cara doce, Indian yam, mapuey. Family Dioscoreaceae. This is a tropical perennial vine that produces edible tubes. The stems have two - to eight wings per stem, serving as an external support for these stems and helping them climb. The sharply divided leaves are large; light to dark green. Male - and female flowers are on the same plant. The small winged fruits are non - edible and have a seed in each wing. This is a cultivated yam species from tropical America with a very good flavor. Medicinal applications Discorea species are the source of the phytochemicals, steroidol-sapogenins. These include diosgenin; of all the steroidal drugs on the market more than 90% are derived from diosgenin as a raw material and used in oral contraceptives. Diosgenin is much similar to the sex hormones estrogen, progesterone, and testosterone. Cortisone and hydrocortisone (used for treatment of allergic reactions and for reducing of inflammation due to arthritis) are also derived from diosgenin. Hardiness USDA zone 9 B - 11. Propagation Seeds, rhizomes and bulbs. Culture Full sun, sandy loam soil. Plant in frost free areas. It can also be grown as an ornamental in the sub - tropics. |
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