Aquatic Plants of MESSER POND
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1 Aquatic Plants of MESSER POND State Contact: Amy P. Smagula Limnologist/Exotic Aquatic Plant Program Coordinator or
2 Overview This slideshow includes four sections aimed at helping you effectively Weed Watch on your waterbody: The first section shows photos of NATIVE aquatic plants that have been documented in your waterbody to date. Learn these and ignore them! They are fine. The second section shows photos of algae you may encounter during your survey. Some are good, some are of concern. The third section shows photos of INVASIVE aquatic plants you do not want in your waterbody. Search for these and report immediately! The final section shows photos of INVASIVE aquatic animals you do not want in your waterbody. Search for these and report immediately!
3 Types of Aquatic Plants Emergent Submergent Floating Algae
4 Plant Refresher Native plants of MESSER POND
5 Floating-leaved plants Includes both rooted and unrooted here
6 Yellow water lily
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10 Emergent plants Plants that are rooted and have most of their biomass as erect vegetation above the water
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12 Bur-reed Thelcoa.org
13 Pipewort
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17 Three-way sedge
18 Swamp Loosestrife Robsplants.com
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20 Submergent plants Rooted or unrooted Vegetative portion wholly underwater Flowers may be emergent
21 Myriophyllum humile (reddish/brownish stems, usually 6 inches tall or less)
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23 Pondweed
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26 Algae (also important to look at) Single celled to colonial Simple plants Base of the food chain
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28 Cyanobacteria often form scums at the surface. Scums often wash up close to shore due to wind or water current. Scums can be greenish, bluegreenish or bluish.
29 The Exotic Plants (aka- plants you don t want) Use these pictures to help you identify any new growth that may come in. Report any sightings of these to: Amy P. Smagula NH DES 29 Hazen Drive Concord, NH Amy.Smagula@des.nh.gov
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31 Feather-like leaves whorled around stem Thick whorls of leaves along entire stem, with a squirrel-tail or garland-like appearance. Variable milfoil- Myriophyllum heterophyllum Native to southern and central U.S., not to NH In several waterbodies in NH
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34 Feather-like leaves whorled around stem, at least 12 or more pairs of small leaflets along one leaf Whorls of leaves arranged along stem, with gaps of 1/2in to a couple inches between whorls. Eurasian milfoil- Myriophyllum spicatum Native to Asia In 5 waterbodies in NH
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36 Branching leaves arranged oppose along stem. Note leaf is attached by a short stem to main stem of plant. Fanwort- Cabomba caroliniana Native to Europe/Asia In 9 waterbodies in NH
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38 Small narrow leaves whorled around stem. Note teeth on leaf edge for hydrilla. Hydrilla- Hydrilla verticillata Native to South America Not yet found in NH (but found in MA and ME)
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40 Narrow leaves whorled around stem. Teeth present on leaf edges but need magnifying lens to see. Brazilian elodea- Egeria densa Native to Asia and South America In 1 waterbody in NH
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42 Seeds form on under side of rosette in mid to late summer Floating rosette of triangular shaped leaves on surface of water, connected to seed in sediment with a long stem/petiole Water chestnut- Trapa natans Native to Asia In 1 waterbody in NH
43 Curly-leaf Pondweed Leaves are narrow with wavy (lasagna noodle) like edges to them, crisp like lettuce K. Hahnel, ME DEP
44 Water Naiad Leaves narrow with teeth on edges, very brittle and low growing plant A. Bove, VT DEC
45 Leaves opposite or whorled on a square stiff stem, rooted in moist, not wet or standing water soils Stalks of small purple flowers form in July and persist until September. One plant can produce up to 2.5 million seeds.
46 Common reed (Phragmites) EXOTIC Large brown seed stalk forms in late summer/early fall. Tall (several feet) stems with blade-like leaves that are silvery green in color. Plants found in moist roadside/shoreline areas.
47 Yellow iris (EXOTIC)
48 Invasive Aquatic Animals (aka- critters you don t want) Report any sightings of these to: Amy P. Smagula NH DES 29 Hazen Drive Concord, NH Amy.Smagula@des.nh.gov
49 Asian Clam Roughly the diameter of a dime, sometimes a quarter
50 Chinese Mystery Snail
51 Zebra Mussel Roughly the size of a pistachio nut
52 Spiny Water Flea Several spiny water fleas on fishing line Spiny water flea on fingertip
53 Please When in doubt about an identification, please send in voucher specimens or photos of what you have to for proper identification.
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