Dioscorea polystachya: Difference between revisions
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==External links== |
==External links== |
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*Walck, J. L., et al. (2010). [http://aob.oxfordjournals.org/content/106/6/945 Understanding the germination of bulbils from an ecological perspective: a case study on Chinese yam (''Dioscorea polystachya'').] ''Ann Bot'' 106 (6): 945-955. |
*Walck, J. L., et al. (2010). [http://aob.oxfordjournals.org/content/106/6/945 Understanding the germination of bulbils from an ecological perspective: a case study on Chinese yam (''Dioscorea polystachya'').] ''Ann Bot'' 106 (6): 945-955. |
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*Plants for a Future. ''[http://www.pfaf.org/user/Plant.aspx?LatinName=Dioscorea+batatas Dioscorea batatas]'' |
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[[Category:Dioscorea|polystachya]] |
[[Category:Dioscorea|polystachya]] |
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Revision as of 22:26, 21 April 2014
| Dioscorea polystachya | |
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| Scientific classification | |
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| Species: | D. polystachya
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| Binomial name | |
| Dioscorea polystachya Turcz.
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| Synonyms | |
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Dioscorea batatas Decne. | |
Dioscorea polystachya is a species of flowering plant in the yam family known by the common names Chinese yam and cinnamon vine. It is native to eastern Asia, and it is present elsewhere as an introduced species.[1] It is also cultivated in Asia for the tubers, which are edible.[2]
This plant is a vine up to 5 meters long or longer. It twines clockwise. The leaves are up to 11 centimeters long and wide. They are lobed at the base and larger ones may have lobed edges. The arrangement is variable; they may be alternately or oppositely arranged or borne in whorls. In the leaf axils appear warty rounded bulbils under 2 centimeters long. New plants sprout from the bulbils or parts of them. The flowers are cinnamon-scented. The plant produces one or more spindle-shaped[2] or cylindrical[1] tubers. The largest may weigh 10 pounds and grow one meter underground.[1]
This yam was introduced to the United States in the 1800s when it was planted as an ornamental or food crop. It and other introduced yam species now grow wild there. It is troublesome in Great Smoky Mountains National Park, where its range is "rapidly expanding".[1] It is most prevalent in moist habitat types. It is more tolerant of frost than other yams and can occur in temperate climates as far north as New York.[1]
References
- ^ a b c d e Gucker, Corey L. 2009. Dioscorea spp. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory.
- ^ a b Dioscorea polystachya. Flora of North America.
External links
- Walck, J. L., et al. (2010). Understanding the germination of bulbils from an ecological perspective: a case study on Chinese yam (Dioscorea polystachya). Ann Bot 106 (6): 945-955.
- Plants for a Future. Dioscorea batatas