Resources
- Plant Invaders of Mid-Atlantic Natural Areas - National Park Service and U.S. Fish and Wildlife Service
- Global Invasive Species Database - Invasive Species Specialist Group
- Weed of the Week - USDA Forest Service
- Federal Noxious Weed Disseminules of the U.S. - USDA-APHIS
- Identification and Biology of Non-Native Plants in Florida's Natural Areas - University of Florida
- Invasive Plant Atlas of New England - University of Connecticut
- Element Stewardship Abstract - The Nature Conservancy
- Southeast Exotic Pest Plant Council Invasive Plant Manual - SE-EPPC
- Biological Control of Invasive Plants in the Eastern United States - USDA Forest Service
- Fact Sheet - Pennsylvania Dept. of Conservation and Natural Resources
Representative Images
1149127 hydrilla Hydrilla verticillata Plant(s) USDA APHIS PPQ Archive |
1624029 hydrilla Hydrilla verticillata Plant(s) Raghavan Charudattan |
5396743 hydrilla Hydrilla verticillata Foliage Robert Vidéki |
5396747 hydrilla Hydrilla verticillata Foliage Robert Vidéki |
5396748 hydrilla Hydrilla verticillata Foliage Robert Vidéki |
5274077 hydrilla Hydrilla verticillata Plant(s) Leslie J. Mehrhoff |
5345046 hydrilla Hydrilla verticillata Plant(s) David J. Moorhead |
5307063 hydrilla Hydrilla verticillata Seed(s) Steve Hurst |
Maps
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
Alternative content
State Regulated List - This map identifies those states that list this species on their regulated list. For more information, visit Invasive.org
Alternative content
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.
Alternative content
| Legend | |
| No Data for this state | |
| Troublesome or Common weed in one or more crops | |
Invasive Listing Sources
- Alabama Invasive Plant Council
- Alachua County Cogongrass Initiative
- Apalachicola Invasive Working Group
- Arizona Noxious Weeds
- California Invasive Plant Council
- California Noxious Weeds
- Colorado Noxious Weeds
- Connecticut Invasive Plant List
- Connecticut Invasive Plant Working Group
- Delaware Natural Resources and Environmental Control, 2004
- East Central Florida CISMA
- EDDMapS Ontario
- Faith Campbell, 1998
- Federal Noxious Weeds
- Florida Exotic Pest Plant Council - Category I
- Georgia Exotic Pest Plant Council - Category 1
- Gulf of Mexico Regional Panel, Aquatic Nuisance Species Annual Report, 2001
- Idaho Noxious Weeds
- Jackie Poole, Texas Parks and Wildlife Department (personal communication)
- Jil M. Swearingen, Survey of invasive plants occurring on National Park Service lands, 2000-2007
- John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
- Maine Noxious Weeds
- Maryland Department of Natural Resources, 1994
- Massachusetts Noxious Weeds
- Mid-Atlantic Exotic Pest Plant Council, 2005
- Mississippi Noxious Weeds
- Native Plant Society of Oregon, 2008
- Nevada Noxious Weeds
- New Hampshire Invasive Species Committee. 2005. Guide to Invasive Upland Plant Species in New Hampshire. New Hampshire Department of Agriculture, Markets and Food Plant Industry Division and New Hampshire Invasive Species Committee.
- New Hampshire Prohibited Aquatic Species
- New Mexico Noxious Weeds
- Nonnative Invasive Species in Southern Forest and Grassland Ecosystems
- North Carolina Division of Parks and Recreation, Department of Environment and Natural Resources, 1998
- North Carolina Noxious Weeds - Class A
- Oregon Noxious Weeds
- Pacific Northwest Exotic Pest Plant Council, 1998
- South Carolina Noxious Weeds
- Tennessee Exotic Pest Plant Council - Significant Threat
- Texas Noxious Weeds
- Treasure Coast Cooperative Invasive Species Mgmt. Area - EARLY DRAFT
- USDA APHIS Regulated Pest List
- Vermont Department of Environmental Conservation
- Vermont Noxious Weeds
- Virginia Department of Conservation and Recreation, 2009
- Washington Noxious Weeds
- WeedUS - Database of Plants Invading Natural Areas in the United States
- Wisconsin's Invasive Species Identification, Classification and Control Rule
Taxonomic Rank
| Kingdom: Plantae |
| Phylum: Magnoliophyta |
| Class: Liliopsida |
| Subclass: Alismatidae |
| Order: Hydrocharitales |
| Family: Hydrocharitaceae |
| Genus: Hydrilla |
Other System Links
Plants: HYVE3Bayer: HYLLI
GRIN: 316414
ITIS: 38974
NPDN Pest: PCHAFBA
NPDN Host: 31579
Synonyms and Other Names
Other Common Names:
Florida elodea, water thyme, waterthyme
| 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. |
Invasive.org is a joint project of the Center for Invasive Species and Ecosystem Health and USDA APHIS PPQ, with additional support from USDA National Institute of Food and Agriculture and USDA Forest Service. The University of Georgia - Warnell School of Forestry and Natural Resources and College of Agricultural and Environmental Sciences |
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Last updated on Tuesday, May 04, 2010 at 02:41 PM