Pacific Island Ecosystems at Risk (PIER)

  [   PIER species lists  ]   [   PIER home  ]

Agrostis stolonifera
L., Poaceae
Click on an image for links to BIGGER PICTURES


Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Risk assessment results:  High risk, score: 19 (Go to the risk assessment)

Other Latin names:  Agrostis alba auct. Eur.; Agrostis palustris Huds.

Common name(s): [more details]

Chinese: xi bo li ya jian gu ying

English: carpet bentgrass, creeping bent, creeping bentgrass, fiorin, marsh bent, redtop, redtop bent, redtop bentgrass, seaside bentgrass, spreading bent

French: agrostide stolonifère, traînasse, traîne

Spanish: agróstide estolonífera, heno ahumado, pasto fiorin

Habit:  grass

Description:  "Rhizomatous or stolonniferous perennials; culms decumbent, (3-) 4-10 (-13) dm long.  Sheaths smooth, glabrous, persistent; ligule truncate to obtuse, 1.5-5 (-8.5) mm long, erose-ciliolate, often lacerate; blades flat, folded, or involute, relatively wide, 2-5 (-6) mm wide when opened, scabrous.  Panicles (7-) 10-18 (-25) cm long, open, sometimes closing after anthesis, the branches scabrous, verticillate, ascending, floriferous from base; glumes lanceolate, acute, rounded on the back, nerves scabrous, purplish, first glume 2-2.5 mm long; second glume 1.8-22 (-2.5) mm long; lemma membranous, 1.4-1.8 (-2.3) mm long, 3-5-nerved, awnless, callus minutely bearded; palea membranous, translucent, 0.7-1.5 mm long.  Caryopsis pale brown to reddish brown, 0.5-0.8 mm long"  (Wagner et al., 1999; p. 1494).

Description from GrassBase.

Habitat/ecology:  "Riparian habitats, seasonal freshwater wetlands, marshes, coastal scrub and beaches.  In the native range, this grass is commonly found in wet meadows and riparian habitats.  It is a polyploid complex in which clonal propagation is predominant.  It is fast growing and invasive because it forms mat-like dense colonies due to vegetative growth, displacing native vegetation and reducing species richness"  (Weber, 2003; p. 31).

In Hawai‘i, "naturalized in disturbed places, especially in moist sites, 640-1,680 m"  (Wagner et al., 1999; p. 1494).

Propagation:  Seed? "Plants in Australia do not fruit and spread solely by stolons. Fragments of stolons easily root and regenerate to new plants" (Weber, 2003; p. 31).

Native range:  "Europe, widely naturalized"  (Wagner et al., 1999; p. 1494).

Presence:

Pacific
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands)
Juan Fernández Islands
Isla Más a Tierra (Robinson Crusoe Island) introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 550)
Chile (offshore islands)
Juan Fernández Islands
Isla Más Afuera (Alejandro Selkirk Island) introduced
Skottsberg, Carl (1953) (p. 215)
Chile (offshore islands)
Juan Fernández Islands
Isla Más Afuera (Alejandro Selkirk Island) introduced
invasive
Atkinson, Rachel/Sawyer, John (2011)
Chile (offshore islands)
Juan Fernández Islands
Isla Más Afuera (Alejandro Selkirk Island) introduced
invasive
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 550)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1494)
State of Hawaii
Hawaiian Islands
Kaua‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1494)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1494)
State of Hawaii
Hawaiian Islands
Moloka‘i Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1494)
Voucher cited: Forbes 98.Mo (BISH)
State of Hawaii
Hawaiian Islands
O‘ahu Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 1494)
Pacific Rim
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Australia
Australia (continental)
Australia (continental)   Hafliger, Ernst/Scholz, Hildemar (1980) (p. 9)
Chile (continental)
Chile
Chile (Republic of) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized
Chile (continental)
Chile
Chile (Republic of)   Hafliger, Ernst/Scholz, Hildemar (1980) (p. 9)
China
China
China (People's Republic of)   Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013)
Moist places along roadsides.
Japan
Japan
Japan (country) native
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Hokkaido
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 191)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
Edgar, E./Connor, H. (2000) (p. 240)
"Sea level to subalpine, often in damp or boggy sites, in disturbed ground, modified grassland or open scrub".
Indian Ocean
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Mascarene Islands
Mascarene Islands (Mauritius, La Reunion, Rodrigues)
Mascarene Islands introduced
Weber, Ewald (2003) (p. 31)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
Canada (except British Colombia)
Canada
Canada (country) introduced
cultivated
U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (continental except west coast)
United States (other states)
United States (other states) introduced
cultivated
U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (continental except west coast)
United States (other states)
USA (Florida) introduced
invasive
U.S. Dept. Agr., Agr. Res. Serv. (2013)
Naturalized

Control: 

Physical:  Small patches may be dug out.

Chemical:  Spray with grass-selective herbicides.


Need more info? Have questions? Comments? Information to contribute? Contact PIER! (pier@hear.org)

  [   PIER species lists  ]   [   PIER home  ]

This page was created on 10 FEB 2007 and was last updated on 16 JAN 2011.