torpedograss

Cyperales > Poaceae > Panicum repens L.
Synonym(s): torpedo grass, couch panicum, wainaku grass, creeping panic

Torpedograss is a perennial grass that can reach up to 3 ft. (1 m) tall. Plants have long, creeping rhizomes with sharp-pointed (torpedo-like) tips. Leaves are linear, flat or folded, 10 in. (26 cm) long, 0.3 in. (5.3 mm) wide with a whitish, waxy covering. Leaf sheaths can be glabrous or hairy and the ligule is membranous with short hairs. Flowering occurs nearly year round. Flowers develop in branched, open inflorescences that are 2.8-7.1 in. (7-18 cm) long. Torpedograss is native to Australia and was introduced into the United States around 1876. This species can occur in a wide variety of habitats. Plants are usually found in damp soils of riparian zones, but can also be found in pastures and on sand dunes. Plants are salt-tolerant.


Identification, Biology, Control and Management Resources


Selected Images from Invasive.org

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Plant(s); habit
Forest & Kim Starr, U.S. Geological Survey, Bugwood.org
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Feature(s); rhizomes
Karen Brown, University of Florida, Bugwood.org
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Feature(s); rhizomes
Karen Brown, University of Florida, Bugwood.org
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Feature(s); Rhizomes
John D. Byrd, Mississippi State University, Bugwood.org
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Foliage;
Karen Brown, University of Florida, Bugwood.org
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Foliage;
John D. Byrd, Mississippi State University, Bugwood.org
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Flower(s);
Ann Murray, University of Florida, Bugwood.org
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Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
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Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
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Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
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Plant(s); habit
Forest & Kim Starr, U.S. Geological Survey, Bugwood.org
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Plant(s); habit
Forest & Kim Starr, U.S. Geological Survey, Bugwood.org
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Infestation;
Tony Pernas, USDI National Park Service, Bugwood.org
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Plant(s);
Ann Murray, University of Florida, Bugwood.org
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Fruit(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
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Diagram or Graphic; Hitchcock, A.S. (rev. A. Chase). 1950. Manual of the grasses of the United States. USDA Misc. Publ. No. 200. Washington, DC.
USDA PLANTS Database, USDA NRCS PLANTS Database, Bugwood.org
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Invasive Reference(s):

Check Invasive.org for most current lists.
  • Alabama - Noxious Weed Law
  • Alabama - IPC List
  • Arizona - Noxious Weed Law
  • Florida - EPPC list
  • Georgia - EPPC list
  • Texas - Noxious Weed Law
  • Texas - Invasive Plant List
  • Invasive Plants: Guide to Identification and the Impacts and Control of Common North American Species


External Links


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