- Lygodium japonicum is a perennial climbing fern that can reach lengths of 90 ft. (30 m). Vines are thin, wiry, green to orange to black and usually die back in the winter.
- The fronds (leaves of a fern) are opposite, compound, usually triangular in shape, 3-6 in. (8-15 cm) long, 2-3 in. (5-8 cm) wide and finely dissected.
- This plant does not produce flowers.
- Fertile fronds bear sporangia that produce tiny, wind-dispersed spores. Plants are also spread by rhizomes.
- Ecological Threat
- Lygodium japonicum often invades disturbed areas such as roadsides and ditches, but can also invade natural areas. It generally is scattered throughout the landscape, but can form dense mats that smother understory vegetation, shrubs and trees. This plant is native to eastern Asia and was first introduced into the United States during the 1930s for ornamental purposes.
Munger, Gregory T. 2005. Lygodium spp. Fire Effects Information System, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory 
Global Invasive Species Database. 2011. Invasive Species Specialist Group (ISSG) of the IUCN Species Survival Commission 
University of Florida, IFAS Extension, Center for Aquatic and Invasive Plants 
South Carolina and North Carolina Exotic Plant Pest Councils 
USDA National Invasive Species Information Center 
Invasive Plant Atlas of the MidSouth (IPAMS) 
Texas Invasive Plant and Pest Council 
Florida Exotic Pest Plant Council 
USDA NRCS PLANTS 
USDA ARS GRIN 
Images from Bugwood.org