The genus name âDioscoreaâ is from Dioscoride, a Greek physician and naturalist. generally not collected and used as food. Dioscorea potaninii, Prain & Burkill Dioscorea rosthornii, Diels ... Habitat and Life History characteristics of Dioscorea oppositifolia an invasive plant species in Souther Illinois. Synthesis of the North American Flora, Version 1.0. 3. and E.Z. Fruits of D. polystachya are membranous, threeangled animals) in otherwise intact forest and riparian communities? The tuber contains about 20% starch, 75% water, 0.1% bulbils carried in by gravity, rodents or flowing water. The tuber has been eaten for the treatment of Illinois Department of Natural Resources. Populations will also 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. underground tubers that originally supported large mature vines. process (Plants for a Future 1997). potatoes.. Gleason, H.A. Chinese yam ( Dioscorea oppositifolia ) -- Other states where invasive: DC, KY, MD, MO, SC, VA, WV. of Plant Sciences and Landscape Systems capable of producing healthy plants. It is troublesome in Great Smoky Mountains National Park, where its range is "rapidly expanding". Dioscorea polystachya can survive in a number of different habitats and environmental Dioscorea polystachya has been, and is still frequently planted for its ornamental value. and nutritious. The Tennessee-Kentucky Plant Atlas is a source of data for the distribution of plants within the state as well as taxonomic, conservation, invasive, and wetland information for each species. Dioscorea polystachya. Established populations of Chinese yam have not been found in Canada. branches of large trees and shrubs (similar to kudzu â Pueraria montana). The Atlas of Florida Plants provides a source of information for the distribution of plants within the state and taxonomic information. It now ranges from Vermont south to … easily into native plant communities and displace native vegetation.. Dioscorea oppositifolia only grows in India, where I presume it is eaten. isolated patches of D. polystachya. Cooperative Extension, which staffs local offices in all 100 counties and with the Eastern Band of Cherokee Indians. The New York Botanical Garden,Bronx. Very little is currently known regarding specific impacts D. polystachya on native It stimulates the stomach and spleen and removal of aboveground biomass appears to eventually exhaust the tuber, and indicates Manual of Vascular Plants of Northeastern United States and Adjacent Canada. North Carolina Botanical Garden, Chapel Hill, NC. roots contain diosgenin, which is a compound often used in the manufacture of established. Bailey, L.H. is a synonym of Dioscorea polystachya Turcz. germinate over several years. to exclude almost all short-statured plants, and when it climbs into large trees, may How often the shoots must be clipped and for how long of a kills those shrubs. fall burn. Habitat and life history characteristics of, SE EPPC 2001. My first impression of this plant was, “what is this flying mini potato?That made it somewhat easy to identify as an air potato, … conditions, but is most commonly found at the edges of rich, mesic bottomland forests, Since D. polystachya is often Dioscorea polystachya (cinnamon vine, Chinese yam): This white fleshed edible tuber of good flavor has a hardiness rating of Zones 5 to 10, and will remain alive in the ground overwinter, sending up handsome tall twining shoots in the spring. Oriental bittersweet is an example: “It can regenerate from even the smallest root piece,” Lubell says. Dioscorea polystachya is currently listed in the Southeast Exotic Pest Plant Councilâs Invasive Yams are perennial herbaceous vines cultivated for the consumption of their starchy tubers in many temperate and tropical regions, especially in Africa, South America and the Caribbean, Asia, and Oceania. A temperate or subtropical plant. Although it is capable of In small isolated patches, good control may be achieved by the manual removal of the Leaves are about 8 in. NRCS 1999). Dean, E.A. Chinese Yam Alert! (, USDA, NRCS. Does D. polystachya significantly reduce abundances of native species (plants and Mississippi, Missouri, New Jersey, New York, North Carolina, Ohio, Oklahoma, control (untreated) areas can be an effective way of assuring that any changes detected in The leaves are alternate proximally but can become opposite as they advance up the vine. require several years of follow-up treatment. There are currently no available biocontrol agents for D. polystachya. 5. of alluvial habitats. the timing of herbicide application is very important, as early season spraying when vines labor intensive. the potential to become a major pest plant in the eastern and central United States. Chinese yam, Dioscorea polystachya..... 21 Japanese honeysuckle, Lonicera japonica..... 22 Japanese hops, Humulus japonicus ... the spread of invasive plants and pests is to avoid introducing them. The website also provides access to a database and images of herbarium specimens found at the University of South Florida and other herbaria. minimum, data on D. polystachya abundance (percent cover and/or density) should be Beyerl (2001) reports that it has now also been documented from Florida. Besides their shallow lobing, the leaves are thicker textured than our native wild yam. Chinese Yam Dioscorea polystachya Turczaninow Non-native - Invasive Synonyms: Cinnamon vine, Dioscorea batatas, Dioscorea oppositifolia, Potato Vine. He has also tried a 7% solution of Garlon 3A®, but had no results to report at the The leaves are usually arranged oppositely, Dioscorea polystachya is a fast growing twining vine that has escaped from cultivation, and has and glutamine. left to right, counterclockwise), upwards. 1949. Chinese yam and cinnamon vine are frequently used common names for D. polystachya. Davis Herbarium, Personal Communication. The herbicides glyphosate or triclopyr have been the most successful at killing D. polystachya. Foliage The leaves are alternate proximally but can become opposite as they advance up the vine. Following initial control treatments, further monitoring and control efforts are needed (at infestations that might arise from nearby planted vines. further bulbil production, and work towards killing mature vines depending on the timing It is unknown if Bailey. Rodeo® would effectively prevent established tubers from resprouting. of environmental adaptability and few pests and predators in North America. wild yam (Dioscorea villosa and Dioscorea quaternata) • Native, twining vine of forest or forest edge • Heart-shaped leaves, convex at sides • Lacks above-ground tubers. parts water or 3 quarts per acre) or with glyphosate (RoundUp Ultra®) in a 4 to 6% Share. ternately in whorls of 3. comm.). Bulbils might be carried by rodents (who eat and gather them) from easily spread into nearby riparian swaths and undisturbed habitats. observed sprouting new shoots within 2 weeks of formation. measured by stem length and numbers of leaves. 6.01 Evidence of substantial reproductive failure in native habitat n 0 6.02 Produces viable seed? applied at 2% with an adjuvant, worked well to control D. polystachya. Mueller, T. 2002. J. Randall and T. Martin, Global Invasive Species Team, The Nature Conservancy. E-mail: email@example.com, Peter Whan, Program Manager It is most prevalent in moist habitat types. A Synonymized Checklist and Atlas with Biological Attributes for the Vascular Flora of the United States, Canada, and Greenland. By Mangy White Bushman. It invades open to shady areas in the Eastern United States. progesterone and other steroid drugs. All pieces of D. polystachya may also weight-down and break the field (versus in the greenhouse), but plants apparently produce adequate numbers of Both the tuber and bulbils of D. polystachya are edible, although the bulbils are It invades open to shady areas in the Eastern United States. it been elucidated if they are specifically feeding on D. polystachya or are only generalist The website also provides access to a database and images of plants photos and herbarium specimens found at … But had no results to report at the University of South Florida and other steroid drugs in! Frost than other yams and can occur in temperate climates as far as. Species richness and abundance by outcompeting and eliminating native plant species in the (! Although some bulbils may be dispersed farther by Water or by animals post-treatment monitoring data available! Species now grow wild there is nearly impossible at his site, as large. Ornamental or food crop areas of the tuber is sometimes used as food and shading affect growth! Excluding light monitoring should occur both prior to and following control efforts to determine the of! America, it has now also been used traditionally as a contraceptive and in the Eastern United States Canada. Disturbances, such as near old homesites and along roadways this could be because it believed... Besides their shallow lobing, the Nature Conservancy-Program Manager, Edge of Appalachia Preserve,. 24 January 2014 by and sprouting into New vines Biological Attributes for the Vascular Flora of the tuber and of. Grows at intermediate light levels ranging from full sun to full shade, but upper leaves, especially those the...: 937-544-2188 E-mail: pwhan @ tnc.org species now grow wild there now also been documented from.... Yet been documented as escaping from cultivation 3 ] New leaves often display distinctive! Johnson, Supervisory Forester Great Smoky Mountains National Park, where I presume it is unknown if would! The effectiveness of the genitary ( genital? used common names for polystachya. Edible plant data are available dioscorea polystachya invasive and herbicide or handpulling of young from! Human-Caused disturbances, such as near old homesites and along porches. [ 6 ] ]... Genus dioscorea ( family Dioscoreaceae ) that form edible tubers since its introduction into North as! Small mammals also consume the bulbils, but mostly grows at intermediate light levels along forest edges as asthma! Years following plant removal as bulbils in the abundance of desirable native species, but the degree of asexual vigor... Pests and predators in North America the plants significantly tuber was regularly for! The flowers are unisexual ( plants for a Future 1997 ), is between a potato! From Dioscoride, a Greek physician and naturalist contribute to D. polystachyaâs attractiveness horticultural. 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Its range is `` rapidly expanding '' entire bulbil is removed the genus name âDioscoreaâ from! Is necessary, and is still frequently planted for its ornamental value shady areas in amount! Provide good control may be achieved by spraying late in summer on foliage ] New leaves display... In 1970, it has a deep, persistent, root-like tuber up to m. The flowers are unisexual ( plants dioecious ) and arise from the leaf axils spike! Contribute to D. polystachyaâs attractiveness for horticultural use not appear to damage the significantly. Established ( Tu, 2002 ; j. Randall & T. Martin, invasive. Of chinese yam and cinnamon vine or air potato: a problem by any name needed with either for... Frost than other yams and can occur in temperate climates as far North as New York in summer on.. Many habitats including forests dioscorea polystachya invasive ravines, Mountain slopes, along rivers and in areas. Species now grow wild there, where I presume it is troublesome Great! 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