Established populations of Chinese yam have not been found in Canada. Height: Chinese yam is a creeping and climbing vine that may reach up to 5 meters in height given support from trees and shrubs. Area of origin. Invasive Species - (Dioscorea oppositifolia) Watch List Chinese Yam has slender vines that spiral counterclockwise and pointed, heart-shaped leaves that are often indented on the sides. Dioscorea oppositifolia L. (Synonym), Last updated October 2018 / Privacy It is a perennial climbing vine, native to China and East Asia. Conclusions for this variety may apply to varieties and strains of marijuana, a schedule I controlled substance as determined by the United States federal government.) Binominal name. EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. climbing vine native to China that is currently widespread throughout East Asia Questions and/or comments to the Bugwood Webmaster, A Field Guide for the Identification of Invasive Plants in Southern Forests, Southeast Exotic Pest Plant Council Invasive Plant Manual, Plant Invaders of Mid-Atlantic Natural Areas, City of Ann Arbor Michigan Parks and Recreation, Georgia Exotic Pest Plant Council - Category 2, Indiana Invasive Species Council - Invasive Plant List, Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007, Jil Swearingen, personal communication, 2009-2017, Kentucky Exotic Pest Plant Council - Severe Threat, Maryland Department of Agriculture's Candidates for Listing of Invasive Plants, Maryland Department of Natural Resources Policy: Restriction on Planting Exotic Invasive Plants, National Park Service, Mid-Atlantic Exotic Plant Management Team Invasive Plant List, New Jersey Invasive Species Strike Team 2017 Invasive Species List, New York Regulated and Prohibited Invasive Species - Prohibited, Non-Native Invasive Plants of Arlington County, Virginia, Non-Native Invasive Plants of the City of Alexandria, Virginia, Nonnative Invasive Species in Southern Forest and Grassland Ecosystems, Pennsylvania Department of Conservation and Natural Resources Invasive Plants, WeedUS - Database of Plants Invading Natural Areas in the United States, West Virginia Invasive Species Strategic Plan and Volunteer Guidelines 2014, West Virginia Native Plant Society, Flora West Virginia Project, and West Virginia Curatorial Database System, September 3, 1999, Wisconsin's Invasive species rule – NR 40, Center for Invasive Species and Ecosystem Health, USDA Animal and Plant Health Inspection Service, USDA National Institute of Food and Agriculture. The Chinese yam readily invades disturbed habitats with light shade, especially forest edges. Invasive Weeds Growth, Reproduction, and Management of Chinese Yam (Dioscorea oppositifolia)1 CHRISTOPHER L. MAIN, JOSEPH E. BEELER, DARREN K. ROBINSON, and THOMAS C. MUELLER2 Abstract: Chinese yam is an exotic perennial vine that invades natural areas in the temperate regions of the eastern United States. The invasive air potato vine has become a major concern throughout Florida and neighboring states. Severe Threat: Chinese Yam is an exotic plant species that possess characteristic s of invasive species and spreads easily into native plant communities and displaces native vegetation. map. Local Concern: Chinese yam can grow up to 16 feet in height, engulfing surrounding vegetation along the way. While it tolerates anything from full sun to deep shade, it prefers intermediate light. Yam: Ornamental; Chinese; Japanese; Wild; White; Purple; Winged; Fourleaf. Dioscorea polystachya or Chinese yam (Chinese: 山 药), also called cinnamon-vine, is a species of flowering plant in the yam family.It is sometimes called Chinese potato or by its Japanese name nagaimo.. Identity Card. Synonyms. Leaves are alternate on the air-potato and are a combination of alternate and opposite on Chinese yam. If possible, please take one or more photos of the invasive species you are reporting. 9:04. It is a member of the Dioscoreaceae or Yam family. In particular cases, this species may be considered for use under specific management … For more information, visit www.eddmaps.org, State List - This map identifies those states that list this species on their invasive species list or law. Dioscorea opposita, Thunb., nom. Typically, leaves are 4 to 8 cm long and up to 4 cm wide with 7 to 9 veins. Chinese yam is a deciduous perennial vine native to China. The Chinese yam, called Shan Yao in Chinese herbalism, is a sweet soothing herb that stimulates the stomach and spleen and has a tonic effect on the lungs and kidneys. Leaves are usually more rounded when young or on young plants and fiddle shaped farther along the … It is reported invasive in DC, KY, MD, MO, SC, TN, VA, and WV. Human connections: Introduced from China in the 1800s for ornamental, food, and medicinal uses. Other Common Names: Cinnamon vine, air potato. Species evaluated with the Predictive Tool: Predicted to be invasive and not recommended by IFAS. Check out our second invasive plant ID video, this time featuring an invasive vine you might not be familiar with, Chinese Yam. It invades open to shady areas in the Eastern United States. The edible tubers are cultivated largely in Asia and sometimes used in alternative medicine. On Tuesday November 10 at 7pm, Erica Clites, Oakland County CISMA director, will discuss new invaders to Oakland County including a recently discovered vine, Chinese yam, and aquatic invasive species including European frog-bit and Red swamp crayfish. The petiole base is not clasping. *Detected in Michigan* Chinese Yam ranges from the north eastern states of Vermont, south to Georgia, Alabama, Mississippi and Louisiana, and as far west as Oklahoma. It is a member of the Dioscoreaceae or Yam family. might easily be mistaken for Chinese yam, but pose no invasive risk. Native ground cover is also displaced and shaded out, … For more information, visit Invasive.org, Related Scientific Names: It was brought from China to North America in the 1800s for ornamental, food and medicinal uses. Life Cycle: Half hardy perennial usually grown as a half hardy annual by gardeners. It has spread from Lousianna to Vermont and can form dense masses of vines that cover and kill native vegetation, including trees, within a variety of moist, disturbed habitats. Growing Region: Zones 4 to 10. Do not plant or introduce invasive plants or pests, and eliminate high risk pathways by not moving firewood. The Chinese yam is now considered an invasive species in the United States. The genus Dioscorea is named in honour of … In 2001, the USDA Forest Service reported that air yam, Chinese yam, and water yam "pose a demonstrable threat to the integrity of the natural plant communities" in the Southern Region. Login to download data. The genus Dioscorea has economic value as a food plant and is used as a traditional Chinese medicine. While this vine dies back in the winter, it grows and reproduces quickly enough to reduce plant diversity and threaten native ecosystems. Chinese yam. Instead, select a beautiful native species such as native yellow honeysuckle or Dutchman’s pipe. The spotted lanternfly is likely to establish itself where tree-of-heaven is present, as they co-occur in their native regions of Asia. Height: Chinese yam is a creeping and climbing vine that may reach up to 5 meters in height given support from trees and shrubs. Native: Tropics and warm temperate regions. 2020-07-28T19:58:24Z The letter F. An envelope. Dioscorea batatas Decne. Among the most invasive woodland plants is the Chinese Yam, also called the cinnamon vine or air potato. Distribution Record Density Literature vs Observation Future Range Future Certainty. The largest may weigh 10 pounds (4.5kg) and grow one meter underground. The vines twine from left to right. Escapes from cultivation and aggressively smothers native plants. Chinese Yam - Southeast Exotic Pest Plant Council Invasive Plant ...Chinese yam is a deciduous perennial vine native to China. Also make note of the location, date and time of the observation. States Counties Points List Species Info. (Dioscorea oppositifolia) Their fruits are a three-winged capsule, and their leaves are strongly heart-shaped. Invasive Species - (Dioscorea oppositifolia) Watch List Chinese Yam has slender vines that spiral counterclockwise and pointed, heart-shaped leaves that are often indented on the sides. Graham Rapier . Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). Chris Evans, University of Illinois, Bugwood.org. Dioscorea batatas L. (Synonym) Native look-alikes and how you can tell them apart from Chinese yam: Chinese Yam Invasive Species Alert - Printable PDF, se the Midwest Invasive Species Information Network, http://www.misin.msu.edu/tools/apps/#home, Pointed, heart-shaped leaves that are often indented on the sides, opposite or alternate, Slender vines that spiral counter-clockwise, Bulbils or air tubers present from June to September, resemble very small potatoes, Small white or greenish-yellow spikes of flowers that smell similar to cinnamon. Having escaped cultivation by the mid 1980s, it is now found throughout the eastern and central United States, including a number of counties in southern Missouri. They are heart-shaped to triangular with elongated tips, thin and hairless, 4 to 8 inches (10 to 20 cm) long and 2 to 6 inches (5 to 15 cm) wide and have Long petioles. Industrial hemp (NOTE: This assessment is specific to industrial hemp. - Or - use the Midwest Invasive Species Information Network (MISIN) online reporting tool, - Or - download the MISIN smartphone app and report from your phone - http://www.misin.msu.edu/tools/apps/#home, Troy Evans, Great Smoky Mountains National Park, Bugwood.org, Chris Evans, Illinois Wildlife Action Plan, Bugwood.org - Chinese yam "air potato", Chris Evans, Illinois Wildlife Action Plan, Bugwood.org. Since its introduction into North America, it has spread throughout the eastern United States. It has small, white or greenish-yellow flowers that smell like cinnamon. Chinese Yam Invasive Species Fact Sheet. Habitat: This deciduous vine can be found along roadsides, fence rows, stream banks, ditches, and rich, mesic forests. (20.3 cm) long, wide, and heart to fiddle shaped (margins three-lobed), with prominent, parallel veins. It’s still sold as an ornamental plant, but don’t plant it! Basal lobes are broadly rounded (air) or often angled (Chinese). Chinese yam (English), cinnamon vine (English) Synonym. It invades open to shady areas in the Eastern United States. Currently, the air potato leaf beetle, ... Zanzibar yam, D. sansibarensis; Chinese yam, D. polystachya; and winged yam, D. alata. Chinese yam, Dioscorea polystachya..... 21 Japanese honeysuckle, Lonicera japonica ... the spread of invasive plants and pests is to avoid introducing them. SUBMIT ALL . Mysterious Chinese seed packets are showing up all over the US, and the government is warning people not to plant them. Dioscoreaceae. Control and Management: Manual- Mowing or cutting will control the spread of Chinese yam, but will not eradicate it unless it is continued until the root reserves are It can be an invasive species in some areas – please check your local conditions if this is of concern. Learn which landscape plants are becoming invasive and avoid using them. Our native yams do not have reddish coloration on new leaves, and do not produce bulbils in their leaf axils. It has small, white or greenish-yellow flowers that smell like cinnamon. Dioscorea oppositifolia (Synonyms: D. polystachya), D. batatas) Jack Ranney, University of Tennessee, Bugwood.org. This will aid in verification of your report. Chinese Yam was introduced here as early as the 19th century for culinary and cultural uses and is now considered an invasive plant species in several states. Plantae. This species is Introduced in the United States. Rapid, early growth allows the vine to block out sunlight and shade out native plants. Dioscorea batatas, Dcne. U.S. Distribution: Chinese yam has spread to 16 southeastern states since its introduction in the 1800’s and has been recorded in some locations in Michigan. Kingdom. Leaves: The leaves are acute to acuminate with a cordate (heart-shaped) base. Once established at this edge, it can spread into the more shaded interior of high-quality forests. According to the Michigan Department of Environmental Quality, invasive species on the watch list are priority species that have been identified as being an immediate and significant threat to Michigan's natural resources. You may be asked to provide your name and contact information if follow-up is needed. Suzannah Iott, MDARD Pesticide and Plant Pest Management Division, 517-420-0473. The leaves can be alternate or opposite in arrangement on the stem. Family. Chinese yam, Cinnamon-vine. Family: Dioscoreaceae. Taxonomy. Height: 80 to 470 inches (200 to 1200 cm). Of the aforementioned yam species found in Florida, only the non-native yams produce aerial bulbils. The bulbils or air tubers are present from June to September and resemble very small potatoes. Chinese yam, cinnamon vine Synonyms. Will be reassessed every 10 years. Chinese yam Dioscorea polystachya Turcz. Dioscorea batatas, Dioscorea decaisneana, Dioscorea opposita Conclusions by Zone. The bulbils or air tubers are present from June to September and resemble very small potatoes. Related Videos. Chinese yam is a terrestrial invasive vine that is currently on the Michigan Watch list. The Global Invasive Species Database was developed and is managed by the Invasive Species Specialist Group (ISSG) of the Species Survival Commission (SSC) of the International Union for Conservation of Nature (IUCN). Common names: Cinnamon vine, Japanese mountain yam, Korean yam; Ecological threat: Invades stream banks and other riparian areas as well as mesic forests, roadways, fence rows, and drainage ways. They are about 8 in. Chinese yam Dioscoreaceae ... cherry, lilac, maple, poplar, stone fruits, and the non-native invasive tree-of-heaven (Ailanthus altissima), which it appears to prefer. It forms dense mats that can down branches and kill trees. Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). The use of these yams is prohibited on National Forest Service lands, and they receive high priority for control funding . Chinese yam is found in many habitats including forests, ravines, mountain slopes, along rivers and in disturbed areas. Alternative Native Plants Wild yam (Dioscorea quaternata or Dioscorea villosa) Chinese yam. Research was conducted from 2001 to 2004 to evaluate growth, repro- … illeg. Etymology. Central, North, South High Invasion Risk. The genus Dioscorea has economic value as a ... www.invasive.org/eastern/eppc/DIOP.html - 14k - Cached - Similar pages Chinese yam: Dioscorea oppositifolia (Dioscoreales: Dioscoreaceae)Invasive Species: any species of insects, … Flowers: Spring, summer and autumn. PREV NEXT SUBMIT FINISH. Common name. Detailed Informations. WATCH LIST. Dioscorea polystachya Turcz. China, Japan, Korea, Taiwan . As a perennial in zones 9 and 10. 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