Trifolium glomeratum L., Fabaceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Amoria glomerata (L.) Soják

Common name(s): [more details]

English: bush clover, cluster clover, clustered clover

French: trèfle aggloméré

Spanish: trebol

Habit:  herb

Description:  "Annual; stems glabrous, procumbent or ascending, not rooting at nodes. Leaves ± glabrous; petioles c. 5-20 mm long; leaflets obovate, acute to obtuse, mucronate, cuneate at base, finely serrate, c. 3-12 mm long; lateral veins thin and straight or slightly recurved and thickened toward leaflet margin; petiolules < 1 mm long, ± equal; stipules ovate, acuminate. Inflorescences axillary, spicate, globose, sessile or shortly pedunculate, mostly remote; flowers numerous, sessile or subsessile, remaining ± erect at fruiting; bracts subtending flowers free. Calyx glabrous, with 10-12 very distinct veins, not inflated at fruiting; throat open, glabrous; calyx teeth subequal, < corolla, ovate, acuminate, < tube, strongly recurved at fruiting; sinuses acute. Corolla pink to purplish, persistent, 3-5 mm long. Pod glabrous, straight, < calyx, 2-3 mm long, 1-2-seeded; seeds c. 1 mm in diameter"  (Webb et al., 1988; p. 686).

Habitat/ecology:  In New Zealand, "dry waste places and pasture, cultivated land, coastal areas"  (Webb et al., 1988; p. 686).  "In Chile this species grows in the following environmental conditions:  Low altitude, interior valleys; coastal mountains, 500-2000 m; coastal areas, 0-500 m. Dry, arid areas, with long drought periods of 6-10 months. precipitations of 100-300 mm. are concentrated in winter. Fully exposed to the sun, level areas or slopes facing north"  (Chileflora).

Propagation:  Seed

Native range:  Canary, Cape Verde and Madeira Islands; Europe; northern Africa; western Asia; widely naturalized (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Australia (Pacific offshore islands) Lord Howe Island	Lord Howe Island	introduced invasive	Orchard, Anthony E., ed. (1994) "Found in pastures and cultivated ground".
Australia (Pacific offshore islands) Norfolk Islands	Norfolk Island	introduced invasive	Orchard, Anthony E., ed. (1994) "Found in pastures and cultivated ground".
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	Maui Island	introduced invasive	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 712) "Naturalized in lawns at Makawao Intermediate School".

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)	New South Wales	introduced invasive	National Herbarium of New South Wales (2013) "A common garden weed".
Australia Australia (continental)	Australia (continental)	introduced	ILDIS Co-ordinating Centre (2013) Australian Capital Territory, South Australia, Tasmania, Victoria, Western Australia
Australia Australia (continental)	Queensland	introduced invasive	National Herbarium of New South Wales (2013) "A common garden weed".
Japan Japan	Japan	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 185)
New Zealand New Zealand	New Zealand (country)	introduced invasive	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 686)
South America (Pacific rim) South America (Pacific rim)	Chile (Republic of)	introduced invasive	Belov, Michail (2013)
United States (west coast) United States (west coast states)	USA (Oregon)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (west coast) United States (west coast states)	USA (California)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)

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	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) Alabama, South Carolina
United States (continental except west coast) United States (other states)	USA (Florida)	introduced	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)

Control:  If you know of control methods for Trifolium glomeratum, please let us know.