Family: Dioscoreaceae. 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.. 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. Chinese yam is found in many habitats including forests, ravines, mountain slopes, along rivers and in disturbed areas. The use of these yams is prohibited on National Forest Service lands, and they receive high priority for control funding . 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. Chinese Yam Invasive Species Fact Sheet. 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. Dioscorea oppositifolia L. (Synonym), Last updated October 2018 / Privacy It invades open to shady areas in the Eastern United States. WATCH LIST. Rapid, early growth allows the vine to block out sunlight and shade out native plants. The largest may weigh 10 pounds (4.5kg) and grow one meter underground. Login to download data. Dioscorea batatas, Dcne. 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, … Chinese yam. Of the aforementioned yam species found in Florida, only the non-native yams produce aerial bulbils. map. Instead, select a beautiful native species such as native yellow honeysuckle or Dutchman’s pipe. 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. Identity Card. Dioscorea batatas, Dioscorea decaisneana, Dioscorea opposita Conclusions by Zone. Graham Rapier . 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. Their fruits are a three-winged capsule, and their leaves are strongly heart-shaped. It’s still sold as an ornamental plant, but don’t plant it! Family. Chinese yam Dioscoreaceae ... cherry, lilac, maple, poplar, stone fruits, and the non-native invasive tree-of-heaven (Ailanthus altissima), which it appears to prefer. Species evaluated with the Predictive Tool: Predicted to be invasive and not recommended by IFAS. climbing vine native to China that is currently widespread throughout East Asia 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 Typically, leaves are 4 to 8 cm long and up to 4 cm wide with 7 to 9 veins. SUBMIT ALL . 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. It forms dense mats that can down branches and kill trees. Chinese yam is a terrestrial invasive vine that is currently on the Michigan Watch list. States Counties Points List Species Info. Alternative Native Plants Wild yam (Dioscorea quaternata or Dioscorea villosa) Escapes from cultivation and aggressively smothers native plants. Since its introduction into North America, it has spread throughout the eastern United States. 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. Michigan Invasive Species Information Network (MISIN) Educational Module and Assessment. Chinese yam, Dioscorea polystachya..... 21 Japanese honeysuckle, Lonicera japonica ... the spread of invasive plants and pests is to avoid introducing them. It has small, white or greenish-yellow flowers that smell like cinnamon. Industrial hemp (NOTE: This assessment is specific to industrial hemp. It has small, white or greenish-yellow flowers that smell like cinnamon. Central, North, South High Invasion Risk. If possible, please take one or more photos of the invasive species you are reporting. This species is Introduced in the United States. It is a member of the Dioscoreaceae or Yam family. The edible tubers are cultivated largely in Asia and sometimes used in alternative medicine. Height: Chinese yam is a creeping and climbing vine that may reach up to 5 meters in height given support from trees and shrubs. Etymology. Dioscorea oppositifolia (Synonyms: D. polystachya), D. batatas) Jack Ranney, University of Tennessee, Bugwood.org. The leaves can be alternate or opposite in arrangement on the stem. Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). Chinese yam, cinnamon vine Synonyms. 2020-07-28T19:58:24Z The letter F. An envelope. China, Japan, Korea, Taiwan . The bulbils or air tubers are present from June to September and resemble very small potatoes. Currently, the air potato leaf beetle, ... Zanzibar yam, D. sansibarensis; Chinese yam, D. polystachya; and winged yam, D. alata. Dioscorea batatas Decne. The petiole base is not clasping. Chinese Yam - Southeast Exotic Pest Plant Council Invasive Plant ...Chinese yam is a deciduous perennial vine native to China. Leaves: The leaves are acute to acuminate with a cordate (heart-shaped) base. might easily be mistaken for Chinese yam, but pose no invasive risk. It is a member of the Dioscoreaceae or Yam family. 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. As a perennial in zones 9 and 10. Dioscorea polystachya Turcz. Dioscorea batatas L. (Synonym) Flowers: Spring, summer and autumn. Native: Tropics and warm temperate regions. It can be an invasive species in some areas – please check your local conditions if this is of concern. This will aid in verification of your report. It is reported invasive in DC, KY, MD, MO, SC, TN, VA, and WV. Chris Evans, University of Illinois, Bugwood.org. illeg. Chinese yam (English), cinnamon vine (English) Synonym. Life Cycle: Half hardy perennial usually grown as a half hardy annual by gardeners. 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. The genus Dioscorea has economic value as a food plant and is used as a traditional Chinese medicine. 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. Binominal name. Dioscorea polystachya is an invasive herbaceous, twining vine that grows to about 16.4 ft. (5 m). Chinese yam Dioscorea polystachya Turcz. Research was conducted from 2001 to 2004 to evaluate growth, repro- … Dioscoreaceae. The spotted lanternfly is likely to establish itself where tree-of-heaven is present, as they co-occur in their native regions of Asia. It is a perennial climbing vine, native to China and East Asia. (20.3 cm) long, wide, and heart to fiddle shaped (margins three-lobed), with prominent, parallel veins. Growing Region: Zones 4 to 10. The genus Dioscorea is named in honour of … 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.) Chinese yam is a deciduous perennial vine native to China. While it tolerates anything from full sun to deep shade, it prefers intermediate light. Kingdom. Ecological Impacts: Chinese Yam spreads easily into native plant communities and displaces native vegetation. PREV NEXT SUBMIT FINISH. 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. Common name. Distribution Record Density Literature vs Observation Future Range Future Certainty. Learn which landscape plants are becoming invasive and avoid using them. The Chinese yam is now considered an invasive species in the United States. EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. 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. Height: Chinese yam is a creeping and climbing vine that may reach up to 5 meters in height given support from trees and shrubs. They are about 8 in. The vines twine from left to right. Will be reassessed every 10 years. For more information, visit Invasive.org, Related Scientific Names: - 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. The bulbils or air tubers are present from June to September and resemble very small potatoes. 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. Height: 80 to 470 inches (200 to 1200 cm). Basal lobes are broadly rounded (air) or often angled (Chinese). Other Common Names: Cinnamon vine, air potato. Related Videos. 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. (Dioscorea oppositifolia) Established populations of Chinese yam have not been found in Canada. Check out our second invasive plant ID video, this time featuring an invasive vine you might not be familiar with, Chinese Yam. Mysterious Chinese seed packets are showing up all over the US, and the government is warning people not to plant them. You may be asked to provide your name and contact information if follow-up is needed. Human connections: Introduced from China in the 1800s for ornamental, food, and medicinal uses. Chinese yam, Cinnamon-vine. Synonyms. Suzannah Iott, MDARD Pesticide and Plant Pest Management Division, 517-420-0473. Yam: Ornamental; Chinese; Japanese; Wild; White; Purple; Winged; Fourleaf. Local Concern: Chinese yam can grow up to 16 feet in height, engulfing surrounding vegetation along the way. The Chinese yam readily invades disturbed habitats with light shade, especially forest edges. Dioscorea opposita, Thunb., nom. *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. Do not plant or introduce invasive plants or pests, and eliminate high risk pathways by not moving firewood. Habitat: This deciduous vine can be found along roadsides, fence rows, stream banks, ditches, and rich, mesic forests. Leaves are alternate on the air-potato and are a combination of alternate and opposite on Chinese yam. 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. Plantae. 9:04. Taxonomy. 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. Also make note of the location, date and time of the observation. Among the most invasive woodland plants is the Chinese Yam, also called the cinnamon vine or air potato. The invasive air potato vine has become a major concern throughout Florida and neighboring states. Our native yams do not have reddish coloration on new leaves, and do not produce bulbils in their leaf axils. Native ground cover is also displaced and shaded out, … Once established at this edge, it can spread into the more shaded interior of high-quality forests. While this vine dies back in the winter, it grows and reproduces quickly enough to reduce plant diversity and threaten native ecosystems. Detailed Informations. Leaves are usually more rounded when young or on young plants and fiddle shaped farther along the … Area of origin. It invades open to shady areas in the Eastern United States. Chinese yam. 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. It was brought from China to North America in the 1800s for ornamental, food and medicinal uses. In particular cases, this species may be considered for use under specific management … 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).