Pacific Island Ecosystems at Risk (PIER)

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Trifolium pratense
L., Fabaceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: hong che zhou cao

English: mammoth red clover, medium red clover, peavine clover, purple clover, red clover

French: trèfle des pres, trèfle des prés, trèfle rouge, trèfle violet

Spanish: trèbol común, trèbol morado, trèbol rojo, trèbol violeta

Habit:  herb

Description:  "Perennial herbs, sparsely villous or glabrescent. Stems numerous from crown, erect or ascending, 20-70 cm, stout, striate. Leaves palmately 3-foliolate, basal and cauline, long petiolate in lower leaves, shortly petiolate in upper leaves; stipules ovate-lanceolate, membranous, base adnate to petiole, apex acuminate-subulate; leaflets ovate-elliptic or obovate, rarely elliptic, 1.5-3.5 (-5) x 1-2 cm, lateral veins 15, base broadly cuneate, margins obscurely serrulate, apex obtuse, rarely retuse. Flowers 30-70, in dense globose or ovoid, terminal, sessile to shortly pedunculate heads, subtended by involucre of stipules of reduced leaves. Calyx slightly pubescent or glabrous, veins 10; teeth subulate, unequal, lower tooth ca. 2x others. Corolla purple, rarely pink or white, 12-14 (-18) mm; standard spatulate, apex rounded, retuse. Ovary elliptic. Legume ovoid. Seed 1, yellow or brown, ovoid"  (Flora of China online).

Habitat/ecology:  In Hawai‘i, "naturalized in west, open areas such as pastures and lawns, 820-2,070 m (Wagner et al., 1999; p. 714).  In China, "cultivated and naturalized; woodland margins, wet meadows, roadsides"  (Flora of China online).  In New Zealand, "pasture, waste places, gardens, cultivated land"  (Webb et al., 1988; p. 690).

Propagation:  Seed

Native range:  Europe, northern Africa, Asia; widely naturalized in temperate regions (GRIN).

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
cultivated
Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido (2006) (p. 558)
State of Hawaii
Hawaiian Islands
Hawai‘i (Big) Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 714)
var. sativum. Voucher cited: Ewart III 232 (BISH)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 714)
var. sativum
New Zealand (offshore islands)
Kermadec Islands
Kermadec Islands introduced
invasive
cultivated
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 690)
Philippines
Philippine Islands
Philippine Islands introduced
ILDIS Co-ordinating Centre (2011)
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) introduced
ILDIS Co-ordinating Centre (2011)
Australian Capital Territory, Tasmania, Victoria, Western Australia
Australia
Australia (continental)
New South Wales introduced
invasive
cultivated
National Herbarium of New South Wales (2011)
"Widely cultivated, frequently naturalized".
Australia
Australia (continental)
Queensland introduced
ILDIS Co-ordinating Centre (2011)
Canada
Province of British Columbia
Canada (British Columbia) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)
Canada
Canada
Canada (country) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2011)
Chile (continental)
Chile
Chile (Republic of) introduced
ILDIS Co-ordinating Centre (2011)
China
China
China (People's Republic of) introduced
invasive
cultivated
Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2011)
Colombia
Colombia
Colombia (Republic of) introduced
ILDIS Co-ordinating Centre (2011)
Guatemala
Guatemala
Guatemala (Republic of) introduced
ILDIS Co-ordinating Centre (2011)
Indonesia
Indonesia
Indonesia (Republic of) introduced
ILDIS Co-ordinating Centre (2011)
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 185)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
cultivated
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 690)
Perú
Perú
Perú (Republic of) introduced
ILDIS Co-ordinating Centre (2011)
Taiwan
Taiwan
Taiwan Island introduced
ILDIS Co-ordinating Centre (2011)
United States (west coast)
United States (west coast states)
USA (Oregon) introduced
ILDIS Co-ordinating Centre (2011)
United States (west coast)
United States (west coast states)
USA (California) introduced
ILDIS Co-ordinating Centre (2011)
United States (west coast)
United States (west coast states)
USA (Washington) introduced
ILDIS Co-ordinating Centre (2011)
Also reported from
Country/Terr./St. &
Island group
Location Cited status &
Cited as invasive &
Cited as cultivated &
Cited as aboriginal introduction?
Reference &
Comments
United States (continental except west coast)
United States (other states)
United States (other states) introduced
ILDIS Co-ordinating Centre (2011)
United States (continental except west coast)
United States (other states)
USA (Florida) introduced
ILDIS Co-ordinating Centre (2011)

Additional information:
Information from James A. Duke (1983), Handbook of Energy Crops.
Weed Identification Guide from Virginia Tech.

Additional online information about Trifolium pratense is available from the Hawaiian Ecosystems at Risk project (HEAR).

Information about Trifolium pratense as a weed (worldwide references) may be available from the Global Compendium of Weeds (GCW).

Taxonomic information about Trifolium pratense may be available from the Germplasm Resources Information Network (GRIN).

References:

Atkinson, Rachel/Sawyer, John. 2011. Naturalized species in the Juan Fernández Archipelago, Chile. Unpublished spreadsheet.

Danton, Philippe/Perrier, Christophe/Martinez Reyes, Guido. 2006. Nouveau catalogue de la flore vaculaire de l'archipel Juan Fernández (Chile) [Nuevo catálogo de la flora vacular del Archipélago Juan Fernández (Chile)]. Acta Bot. Gallica 153(4):399-587.

ILDIS Co-ordinating Centre. 2011. International Legume Database & Information Service. Online searchable database.

Mito, Toshikazu/Uesugi, Tetsuro. 2004. Invasive alien species in Japan: the status quo and the new regulation for prevention of their adverse effects. Global Environmental Research 8(2)/2004: 171-191.

National Herbarium of New South Wales. 2011. PlantNet: New South Wales Flora online. The Plant Information Network System of the Botanic Gardens Trust Version 2.0. Online resource.

U.S. Dept. Agr., Agr. Res. Serv. 2011. National Genetic Resources Program. Germplasm Resources Information Network (GRIN). Online searchable database.

U.S. Dept. Agr., Nat. Res. Cons. Serv. 2011. The PLANTS Database. National Plant Data Center, Baton Rouge, LA 70874-4490 USA.

Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. 1999. Manual of the flowering plants of Hawaii. Revised edition. Bernice P. Bishop Museum special publication. University of Hawai‘i Press/Bishop Museum Press, Honolulu. 1919 pp. (two volumes).

Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. 1988. Flora of New Zealand, Volume IV: Naturalised pteridophytes, gymnosperms, dicotyledons. Botany Division, DSIR, Christchurch. 1365 pp.

Zhengyi, Wu/Raven, Peter H./Deyuan, Hong. 2011. Flora of China (online resource).


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

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This page was created on 14 FEB 2011 and was last updated on 6 APR 2011.