Scientific Name Synonyms
torpedograss, torpedo grass, couch panicum, wainaku grass, creeping panic
- 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.
- 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.
- 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.
- Stone, Katharine R. 2011. Panicum repens, Fire Effects Information System, U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory
- Global Invasive Species Database. 2011. Invasive Species Specialist Group (ISSG) of the IUCN Species Survival Commission
- University of Florida, IFAS Extension, Center for Aquatic and Invasive Plants
- Invasive Plant Atlas of the MidSouth (IPAMS)
- Texas Invasive Plant and Pest Council
- Florida Exotic Pest Plant Council
- Flora of China, www.eFloras.org
- USDA NRCS PLANTS
- USDA ARS GRIN
Images from Bugwood.org