- Dioscorea alata is an herbaceous, twining vine that can grow to lengths exceeding 30 ft. (9.1 m). It invades open to shady areas in the extreme southeastern United States.
- Leaves are opposite, 8 in. (20.3 cm) long and narrowly heart-shaped with long petioles. The stems are square with the corners compressed into wings.
- The vine rarely flowers.
- The chief means of reproduction is by aerial potato-like tubers (bulbils) located at the leaf axils and by underground tubers.
- Ecological Threat
- Dioscorea alata can form dense masses of vines that cover and kill native vegetation including trees. It was introduced from Asia as a possible food source in the early 1800s. In some countries it is presently being cultivated for medicinal uses.
- Nonnative Invasive Plants of Southern Forests - USDA Forest Service
- Identification and Biology of Non-Native Plants in Florida's Natural Areas - University of Florida
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EDDMapS Distribution - This map is incomplete and is based only on current site and county level reports made by experts, herbaria, and literature. For more information, visit www.eddmaps.org
State Invasive List - This map identifies those states that list this species on their invasive species list. For more information, visit Invasive.org
Invasive Listing Sources
- Alabama Invasive Plant Council - Watch list A
- Apalachicola Invasive Working Group
- East Central Florida CISMA
- Faith Campbell, 1998
- Florida Exotic Pest Plant Council - Category I
- Florida Noxious Weeds
- Georgia Exotic Pest Plant Council - Category 3
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- Treasure Coast Cooperative Invasive Species Mgmt. Area - EARLY DRAFT
- WeedUS - Database of Plants Invading Natural Areas in the United States
|Common Name Reference:|| USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|
|Scientific Name Reference:||USDA, NRCS. 2010. The PLANTS Database. National Plant Data Center, Baton Rouge, LA, USA.|