torpedograss USDA PLANTS Symbol: PARE3
U.S. Nativity: Exotic
Habit: Grass or Grasslike Aquatic Plants
Panicum repens L.

Jump to: Resources | Images | Distribution Maps | Sources
Taxonomic Rank: Liliopsida: Cyperales: Poaceae
Synonym(s): torpedo grass, couch panicum, wainaku grass, creeping panic
Native Range: Africa, temp. & trop Asia, Europe (GRIN);

Appearance
Panicum repens 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.
Foliage
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.
Flowers
Flowering occurs nearly year round. Flowers develop in branched, open inflorescences that are 2.8-7.1 in. (7-18 cm) long.
Fruit
Fruits are small, about 0.07 in. (1.8 mm).
Ecological Threat
Panicum repens is native to Africa and Eurasia 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.orgView All Images at Invasive.org


Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Feature(s); Rhizomes
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
John D. Byrd, Mississippi State University, Bugwood.org
Additional Resolutions & Image Usage

Infestation;
Tony Pernas, USDI National Park Service, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); habit
Forest and Kim Starr, Starr Environmental, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); habit
Forest and Kim Starr, Starr Environmental, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); habit
Forest and Kim Starr, Starr Environmental, Bugwood.org
Additional Resolutions & Image Usage

Plant(s); 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
Additional Resolutions & Image Usage

Fruit(s);
Steve Hurst, USDA NRCS PLANTS Database, Bugwood.org
Additional Resolutions & Image Usage

Feature(s); rhizomes
Karen Brown, University of Florida, Bugwood.org
Additional Resolutions & Image Usage

Feature(s); rhizomes
Karen Brown, University of Florida, Bugwood.org
Additional Resolutions & Image Usage

Foliage;
Karen Brown, University of Florida, Bugwood.org
Additional Resolutions & Image Usage

Plant(s);
Ann Murray, University of Florida, Bugwood.org
Additional Resolutions & Image Usage

Flower(s);
Ann Murray, University of Florida, Bugwood.org
Additional Resolutions & Image Usage

EDDMapS Distribution:
This map is incomplete and is based only on current site and county level reports made by experts and records obtained from USDA Plants Database. For more information, visit www.eddmaps.org
 


State(s) Where Reported invasive.
Based on state level agency and organization lists of invasive plants from WeedUS database.


Invasive Listing Sources:
Alabama Invasive Plant Council
Archbold Biological Station
Faith Campbell, 1998
Florida Exotic Pest Plant Council
Georgia Exotic Pest Plant Council
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.
South Carolina Exotic Pest Plant Council