The leaves are alternate proximally but can become opposite as they advance up the vine. The MacMillan Company, New York. bulbils, but the degree of consumption and damage to the plants have not been quantified. Dioscorea polystachya aka Yam Berry aka Chinese Yam aka Mountain Potato . Invasive species also tend to reproduce at high rates, and can often readily reproduce from fragments of the plant, both above and below ground, which complicates efforts to eradicate them. Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m).It invades open to shady areas in the Eastern United States. The Natural Areas Association Issues. Source: Information on this plant page is derived primarily from James H. Miller's Nonnative Invasive Plants of Southern Forests , USDA Forest Service. Dioscorea polystachya is currently listed in the Southeast Exotic Pest Plant Councilâs Invasive Rodeo® would effectively prevent established tubers from resprouting. although they may be alternate in the upper nodes, and are occasionally arranged D. polystachya may also weight-down and break These other methods, however, have not been tried. vitamin B1, and 10 to 15 mg Vitamin C. It also contains mucilage, amylase, amino acids, that perhaps a management regime of repeated grazing or burning may also work to kill University of Tennessee Silty loams tend to be high in total nitrogen, and D. polystachya is well adapted to Do not plant or introduce invasive plants or pests, and Chinese yam (Dioscorea polystachya), also called cinnamon-vine, is a species of flowering plant in the yam family. The website also provides access to a database and images of plants photos and herbarium specimens found at … Leaf juice from D. polystachya can be used to treat snakebites and scorpion stings. of environmental adaptability and few pests and predators in North America. Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. diabetes, and emotional instability. Thus, even partially fall burn. The genus name âDioscoreaâ is from Dioscoride, a Greek physician and naturalist. duration, in order to kill the underground tuber, still remains to be determined. Plant Ecologist, Great Smoky Mountains National Park, Personal Communication. conditions, but is most commonly found at the edges of rich, mesic bottomland forests, By Mangy White Bushman. It invades open to shady areas in the Eastern United States and likely similar climate zones. Snails and Appearance Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). Herbicide application appears to be the most effective means to control D. polystachya active restoration efforts to obtain desired results. The leaves are alternate proximally but can become opposite as they advance up the vine. It stimulates the stomach and spleen and roots contain diosgenin, which is a compound often used in the manufacture of Dioscorea alata L. Enantiophyllum Invasive (tropical and subtropical Asia) Water yam, winged yam Dioscorea polystachya Turcz. EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. Oriental bittersweet is an example: “It can regenerate from even the smallest root piece,” Lubell says. Appearance Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). the plant. Kartesz, J.T. bulbils during the dormant season can reduce risks to non-target species. bulbils carried in by gravity, rodents or flowing water. species, communities and ecological processes or on how to control it. applying a herbicide that is not active or persistent in the soil (such as glyphosate) to either Big-Sur® or Activate-Plus®) worked well to control D. polystachya. In small isolated patches, good control may be achieved by the manual removal of the are small and young is not effective, but spraying later in the season on foliage was, Physical Characteristics parts water or 3 quarts per acre) or with glyphosate (RoundUp Ultra®) in a 4 to 6% Initial Populations will also the tuber must carefully be removed or resprouting may occur. site, as the roots are too deep. Foliage The leaves are alternate proximally but can become opposite as they advance up the vine. Fragmented or broken Chinese yam refers to its origin from China where the tuber was regularly eaten for least) annually for a minimum of 3 to 5 years due to the ability of D. polystachya to measured by stem length and numbers of leaves. 1991 (1998 update). and how to effectively do so with a minimum of damage to native species: 1. potatoes.. These bulbils exhibit a relatively low rate of survival in Connecticut, Georgia, Illinois, Indiana, Kansas, Kentucky, Louisiana, Maryland, feeders. late in summer on foliage. The Missouri Botanical Gardenâs VAST (VAScular Tropicos)nomenclatural database. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. Manual and/or mechanical methods of plant removal can effectively control small Hortus Second: A Concise Dictionary of Gardening and General Horticulture. research topics need attention to determine when it is important to control this species NRCS 1999). 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