- Salvinia molesta is an aquatic fern that floats on the surface of the water. Submerged fronds are “stringy” and resemble roots.
- Floating leaves are 0.5-1.5 in. (2.5-3.8 cm) long, oblong, and vary in color from green to gold to brown. The surfaces of the leaves have rows of arching hairs that look like little egg-beaters. When young, leaves are smaller and lie flat on the surface of the water.
- This plant does not produce flowers.
- S. molesta reproduce by spores and by budding of broken stems or attached nodes.
- Ecological Threat
- After maturing, S. molesta forms chains of leaves that run together to form thick mats on the surface of the water. These mats restrict oxygen and light availability causing death of the primary producers and disrupting the aquatic food chain. S. molesta is on the Federal Noxious Weed list and can invade most any type of aquatic system. The plant is native to South America and was first introduced into North America as an ornamental.
- Pest Alert - USDA APHIS PPQ
- Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service
- Domestic Programs Pest Evaluation - USDA APHIS PPQ
- Invasive Plant Atlas of New England - University of Connecticut
- Federal Noxious Weed Disseminules of the U.S. - USDA-APHIS
- Global Invasive Species Database - Invasive Species Specialist Group
- Plant Invaders of Mid-Atlantic Natural Areas - National Park Service and U.S. Fish and Wildlife Service
Image Sets View other image sets:
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
Most Troublesome / Most Common Agricultural Weed List
This map identifies those states that consider this species either most troublesome or most common in at least one commodity. For more information, visit the MTMC project page.
|No Data for this state|
|Troublesome or Common weed in one or more crops|
Invasive Listing Sources
- Alabama Invasive Plant Council - Watch list A
- Apalachicola Invasive Working Group
- Arizona Noxious Weeds
- Arkansas Noxious Weeds - Prohibited
- California Invasive Plant Council
- California Noxious Weeds
- Colorado Noxious Weeds
- Connecticut Invasive Plant List
- Federal Noxious Weeds
- Georgia Exotic Pest Plant Council - Category 1 Alert
- Gulf of Mexico Regional Panel, Aquatic Nuisance Species Annual Report, 2001
- Idaho Noxious Weeds
- Massachusetts Noxious Weeds
- Mississippi Noxious Weeds
- National Wildlife Refuge Association, Silent Invasion: A Call to Action from the National Wildlife Refuge Association, 2002. Washington DC. 17 pp.
- Nevada Noxious Weeds
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- North Carolina Noxious Weeds - Class A
- South Carolina Noxious Weeds
- Tennessee Noxious Weeds
- USDA APHIS Regulated Pest List
- Vermont Noxious Weeds
- Virginia Invasive Plant Species List
- WeedUS - Database of Plants Invading Natural Areas in the United States
Other System LinksPlants: SAMO5
NPDN Pest: PEPACBC
NPDN Host: 36842
|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.|