Source: California Invasive Plant Council


URL of this page: http://www.cal-ipc.org/ip/management/plant_profiles/Spartina_densiflora.php

Spartina densiflora (dense-flowered cordgrass)

Spartina densiflora
Spartina densiflora
Photo courtesy Joseph DiTomaso

Spartina densiflora (dense-flowered cordgrass) is a rhizomatous perennial grass (family Poaceae) found in salt marshes in Humboldt Bay and San Francisco Bay. Dense-flowered cordgrass may have been introduced to Humboldt Bay from Chile by lumber ships in the 19th century. It tolerates high salinity and grows especially well in higher tidal marsh, where it is known to displace native pickleweed (Salicornia virginica) and native California cordgrass (Spartina foliosa). The speciesí abundant seed has the potential to disperse over long distances by floating on water.

Cal-IPC Inventory rating: High - Alert

Cal-IPC Resources on Spartina densiflora

Cal-IPC News Articles

  • Grijalva, E., D. Kerr, et al. (2006). Cordgrass and clapper rails. Cal-IPC News. 13: 6-8,11. Richardson, B. (2003). Invasive Spartina: "Just another weed": Biology, spread, and prospects for control. Cal-IPC News. 11: 4-6.

Cal-IPC Symposium Proceedings

  • Kerr, D. (2011). Invasive Spartina Project at a turning point: Eradication on the horizon, reconciling clapper rail impacts, and charting a course towards tidal marsh revegetation with native cordgrass. Cal-IPC 2011 Symposium. Tahoe City, CA, California Invasive Plant Council.
  • Kerr, D. (2010). Adaptive integrated vegetation management of invasive Spartina densiflora in the San Francisco Estuary. Cal-IPC 2010 Symposium. Ventura, CA, California Invasive Plant Council.
  • Blair, C. E. (2009). Invasive aquatic weeds: Implications for mosquito and vector management activities. Cal-IPC Symposium 2009. Visalia, CA, California Invasive Plant Council.
  • Goodman, T. and A. Pickart (2009). Refining mechanical removal methods for the eradication of Spartina densiflora at Humboldt Bay National Wildlife Refuge. Cal-IPC Symposium 2009. Visalia, CA, Cal-IPC.
  • Anderson, L., K. Zaremba, et al. (2004). Aquatic working group. California Invasive Plant Council Symposium 2004. Ventura, CA.
  • Ayres, D. R., D. L. Smith, et al. (2002). Spread of exotic cordgrasses and hybrids (Spartina sp.) in the tidal marshes of San Francisco Bay. California Exotic Pest Plant Council Symposium 2002. Sacramento, CA.
  • Pickart, A. (2003). A decade of dune restoration at the Lanphere Dunes. California Invasive Plant Council Symposium 2003. Kings Beach, CA.
  • Smith, D., S. Klohr, et al. (2002). Introduced Spartina in San Francisco Bay: 2000-2001 Survey and Findings, San Francisco Estuary Invasive Spartina Project. California Exotic Pest Plant Council Symposium 2002. Sacramento, CA.
  • Strong, D. R. and C. C. Daehler (1995). Alien cordgrasses in Pacific estuaries. California Exotic Pest Plant Council Symposium '95. M. Kelly, J. Lovich and J. Randall. Pacific Grove, CA.
  • Tatum, E. R., P. Clifford, et al. (2005). Comparison of removal methods for Spartina densiflora in Humboldt Bay. California Invasive Plant Council Symposium 2005. Chico, CA.
  • Zaremba, K., M. McGowan, et al. (2004). 2003 Invasive Spartina Project Monitoring Program. California Invasive Plant Council Symposium 2004. Ventura, CA.

Other Resources on Spartina densiflora

  • USDA PLANTS database - Federal database with information on identification and distribution, and links to websites in individual states.
  • Jepson Online Interchange for California Flora - Information on taxonomy, biology, and distribution from the UC Berkeley Jepson Herbarium.
  • CalFlora - Distribution information by county based on submitted observations and herbarium specimens.
  • CalPhotos - Images of plants taken mostly in California.
  • San Francisco Estuary Invasive Spartina Project - The Invasive Spartina Project is a coordinated regional effort among local, state and federal organizations dedicated to preserving California's extraordinary coastalbiological resources through the elimination of introduced species of Spartina (cordgrass).