PARROT FEATHER Myriophyllum Aquaticum

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New Invasive Plants of the Midwest Fact Sheet PARROT FEATHER Myriophyllum aquaticum Description: Parrot feather is an herbaceous aquatic plant. Its bluish‐green stems are stout, can grow up to 5 feet long, and have tips that emerge up to a foot above the water surface. Its feathery leaves are arranged in whorls of 4‐6 around the plant’s stem. Emergent leaves are 0.75‐2 inches long, with 6‐18 divisions per leaf, and are stiffer and darker green than the submersed leaves. Submersed leaves are smaller (0.5‐1.25 inches long) and have 20‐30 divisions per leaf. Parrot feather’s tiny flowers are white and inconspicuous. Only female plants are reported in the United States. Parrot feather spreads by plant fragments. Ecological threat: Parrot feather is a popular aquatic garden plant that has escaped cultivation worldwide. It is particularly problematic in shallow ponds, as it prefers slow moving water bodies. It also invades stream edges, lakes, and drainage and irrigation ditches. It can form dense mats that compete with native aquatic plants; infestations can shade out algae, disrupting the aquatic food web. Parrot feather provides preferred habitat for mosquito larvae, impedes recreational water use, and can disrupt water drainage in ditches. Native Range: South America Current North American Range: present in the western, southern, and eastern U.S. Isolated populations have been found in Illinois, Indiana, Iowa, Missouri, and Ohio. Current Midwest Distribution, including Ontario Parrot feather is prohibited in Indiana, Michigan, and Not Known Isolated Wisconsin. It is regulated in Minnesota (it can be sold, but not released or planted in public waters). Locally Abundant Widespread For information on aquatic plant management, see http://www.extension.purdue.edu/extmedia/ws/ws_21.pdf. Photo credits: Left ‐ University of Florida/IFAS; Right ‐ Graves Lovell, Alabama Department of Conservation and Natural Resources, Bugwood.org Early detection and rapid response can help stop the spread!.

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A Guide to Selected Invasive Non-Native Aquatic Species in Massachusetts
A Guide to Selected Invasive Non-native Aquatic Species in Massachusetts C. Barre Hellquist Department of Biology Massachusetts College of Liberal Arts North Adams, Massachusetts 01247 James Straub Massachusetts Department of Environmental Management Lakes and Ponds Program 131 Barnum Road, Bldg 3701 Devens, MA 01432 Non-native species are a problem in many Massachusetts lakes, ponds, and rivers. Once in a water body, many of these organisms can spread aggressively, out-competing and frequently eliminating native species. They reduce the health of our water bodies by disrupting natural ecosystems and altering fish and wildlife habitats. Frequently, they make swimming, boating, and fishing difficult or dangerous. Many plant species produce a dense vegetative cover on lakes, and the large amount of decomposing organic matter accelerates eutrophication in the lake system. Often, non-native aquatic species spread to new water bod- ies when they are transferred by boats, motors, bait buckets, fishing tackle and trailers. These infestations can be prevented if everyone remembers to completely clean their boats, motors, fishing equip- ment and trailers before leaving a site. Dispose of all organisms and drain water from your boat on dry land before leaving a water body. YOU CAN HELP!!! Learn how to identify these organ- isms and help prevent their spread throughout Massachusetts. For more information, or to report an infestation, please contact: Massachusetts Department of Environmental Management Lakes and Ponds Program (508) 792-7716 ext 170 www.state.ma.us/dem/ Massachusetts Department of Environmental Protection Office of Watershed Management (508) 767-2877 www.state.ma.us/dep/ Massachusetts Division of Fisheries and Wildlife Natural Heritage and Endangerd Species Program (508) 792-7270 ext.
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Whorled Water-Milfoil, Myriophyllum Verticillatum
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Hybrids of Eurasian Watermilfoil and Northern Watermilfoil Are
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Written Findings of the Washington State Noxious Weed Control Board (Draft Stage November 2007)
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Myriophyllum Spicatum Or M
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