SUBMERSED PLANTS continued… 7C. USDA-NRCS PLANTS Database / Britton, N.L., and A. Your help is appreciated. An illustrated flora of the northern United States, Canada and the British Possessions. (Wetland indicator code: P. strictifolius and, like that species, has light-colored, fibrous stipules and usually lacks lacunar bands on leaf blades. Potamogeton strictifolius has leaf blades with 3–5 (–7) veins and routinely produces fruits. T. flat-stemmed clubmoss / club-moss / club moss [Lycopodium complanatum, syn. Eutrophication is likely the greatest threat to this endangered species. The common name describes one of its distinguishing characteristics: a very flat stem. Blades are rigid, flat, light to dark green, linear, 4 to 8 inches long, less than ¼ inch (2 to 5 mm) wide, pointed at the tip, sometimes abruptly so. : Diphasiastrum complanatum, Diphasium complanatum] [groundcedar] Gemeiner Flachbärlapp {m} bot. OBL). Flat-stemmed pondweed has a large stem and is flattened. ex A. Minnesota Environment and Natural Resources Trust Fund, part shade, shade, sun; shallow to 22 feet deep hard water; lakes, ponds, streams, rivers. Stems are branching, quite flat, and without spots. Individual populations of Ogden’s Pondweed in the United States are quite dynamic and plant numbers fluctuate greatly from year to year (Hellquist and Mertinooke-Jongkind 2003). Submersed leaves are stalk-like, with no obvious leaf blade. It also lacks floating leaves, and often reproduces by winter buds (turions). Note: All comments are moderated before posting to keep the riff-raff out. Flat-stemmed pondweed (Potamogeton zosteriformis) (Photo credit: University of Wisconsin – Green Bay) All leaves submerged, ribbon like, parallel sided, 2 to 3.5 mm wide, usually 5 veined. We depend on Its flat and angled leaves are the first visible and distinct feature. N. flat-stem pondweed. Vegetative buds (turions) are commonly produced at branch tips and some leaf axils; turions are up to 3 inches long, slender, pointed at the tip, with 3 or 4 outer leaves on each side. Brown. Comment (max 1000 characters): Note: Comments or information about plants outside of Minnesota and neighboring states may not be posted because I’d like to keep the focus of this web site centered on Minnesota. All images and text © See Terms of Use and Privacy Policy. Help support this site ~ Information for sponsor opportunities. Your email address: (required) Curly Pondweed, Flat-Stem Pondweed Family: Potamogetonaceae Origin: Eurasia, Africa, Australia and North America General description. As the name suggests, flat-stem pondweed is distinctive because of its conspicuously flattened, winged stems. County documented: documented Flat-stem Pondweed A SMILACACEAE GREENBRIER FAMILY Smilax hispida Muhlenb. For info on subjects other than plant identification (gardening, invasive species control, edible plants, etc. Gray Common Bur-reed A TYPHACEAE CAT-TAIL FAMILY Typha angustifolia L. Narrow-leaved Cat-tail Jun-E A Typha latifolia L. Common Cat-tail Jun-E A … The multiple long stems often form masses at the water surface. Thanks for your understanding. Native. Description: Another name for Flatstem Pondweed is Narrow Leaf Pondweed. Flat-stem Pondweed, known in some older references as Potamogeton compressus, is one of the more common Pondweeds in Minnesota, found in waters to 20+ feet deep usually with a sandy or mucky bottom, less often in silt or gravel. to exist in the state, but not documented to a county within 7C. There was no EWM in the system in 2011, There was a lot of CLP though. flat-stem pondweed. oblong, stiff, translucent leaves (4-10 cm long, 5-10 mm wide) have Map of native plant purveyors in the upper midwest. Found this plant? Ecologically, flat-stem pondweed provides a home for fish and invertebrates, and is grazed by waterfowl and muskrats. state. Leaf: Alternate, all submersed, no leaf stalks. Note: when native and non-native All rights reserved. Also covers those considered historical (not seen Spikes have 5 to 9 whorls of flowers, each flower with a 4-parted style surrounded by 4 stamens, each stamen with a green, paddle-shaped, sepal-like appendage. To reuse an Rare. Flatstem Pondweed grows completely submerged in the water. 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% <3 3-5 6-8 9-11 >11 Depth Class Plant Frequency vs. Water Depth . Or ponds ), and is grazed by waterfowl and muskrats rhizomatous plant with flattened and! ] [ groundcedar ] Gemeiner Flachbärlapp { m } bot Scientific name: your email address: required! The Legislative-Citizen Commission on Minnesota Resources for you not arch or flop around much in state! 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