denseflower cordgrass USDA PLANTS Symbol: SPDE2
U.S. Nativity: Exotic
Habit: Grass or Grasslike
Spartina densiflora Brongn.

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Taxonomic Rank: Liliopsida: Cyperales: Poaceae

Appearance
Spartina densiflora is perennial aquatic grass. It grows 1-5 ft. (0.3-1.5 m) tall and is native to South America.
Foliage
Leaf (blade) margins in-rolled, 1/8 to 1/3 inches wide at the base. Blade at a 15-35 degree angle to the stem. Internodes firm.
Flowers
The inflorescence narrow, dense, and cylindrical with branches erect and overlapping.
Fruit
Seeds are 0.25-0.4 in. (0.6-1 cm) long and smooth. S. densiflora reproduces by seed and rarely rhizomes.
Ecological Threat
S. densiflora is a nonnative grass species that invades the middle tidal zones in estuaries where it aggressively out competes native grasses, sedges and salicornia stands.

Selected Images from Invasive.orgView All Images at Invasive.org


Plant(s); growing as a bunchgrass.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
Additional Resolutions & Image Usage

Infestation; infestation
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
Additional Resolutions & Image Usage

Flower(s); inflorescence.
Joseph M. DiTomaso, University of California - Davis, Bugwood.org
Additional Resolutions & Image Usage

Stem(s); collar and sheath.
Joseph M. DiTomaso, University of California - Davis, 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:
California Invasive Plant Council
John Randall, The Nature Conservancy, Survey of TNC Preserves, 1995.