Coreopsis lanceolata L., Asteraceae

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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Common name(s): [more details]

Chinese: da jin ji ju, jian ye jin ji ju

English: coreopsis, garden coreopsis, lanceleaf coreopsis, lanceleaf tickseed, tickseed

French: coréopsis lancéolé

Hawaiian: ko‘oko‘olau haole

Mangarevan: eie

Habit:  herb

Description:  "Clumped perennial herbs 2-7 dm tall, villous or sometimes glabrous.  Leaves simple, clustered toward base, spatulate to linear or linear-lanceolate, usually 5-20 cm long, 0.5-2 cm wide, with 1-2 pairs of entire-margined lateral lobes or margins entire, the lower ones petiolate, becoming sessile above.  Heads few, on long naked peduncles usually 2-4 dm long; outer involucral bracts lanceolate, 5-10 mm long, margins scarious and ciliate; chaffy bracts attenuate; rays yellow, 1.5-3 cm long; disk corollas yellow, usually 5-lobed; pappus of 2 short scales.  Achenes 2-3 (-4) mm long, margins with thin, flat wings."  (Wagner et al., 1999; pp. 289, 1859).

Habitat/ecology:  In Hawai‘i, "commonly cultivated and now sparingly naturalized" (Wagner et al., 1999; pp. 289, 1859). A weed of agricultural land and wasteland in South Africa and waste areas and roadsides in Queensland, Australia (Csurhes & Edwards, 1998; p. 152).

Propagation:  Wind-dispersed seed and rhizomes (Csurhes & Edwards, 1998; p. 152).

Native range:  United States and Canada (Ontario); cultivated and naturalized elsewhere (GRIN).

Presence:

Pacific
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
French Polynesia Gambier Islands	Mangareva (Gambier) Island	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Cultivée
French Polynesia Gambier Islands	Mangareva (Gambier) Island	introduced cultivated	St. John, Harold (1988) (p. 25) Voucher cited: Fosberg 11045 (BISH)
French Polynesia Society Islands	Tahiti Island	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Cultivée
French Polynesia Tuamotu Archipelago	Makatea (Ma‘atea) Island	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Cultivée
French Polynesia Austral (Tubuai) Islands	Rurutu Island	introduced cultivated	Florence, J./Chevillotte, H./Ollier, C./Meyer, J.-Y. (2013) Cultivée
State of Hawaii Hawaiian Islands	Hawai‘i (Big) Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 289) Voucher cited: Fagerlund & Mitchell 506 (BISH) Sparingly naturalized.
State of Hawaii Hawaiian Islands	Kaua‘i Island	introduced	Wester, Lyndon (1992) (p. 128)
State of Hawaii Hawaiian Islands	Lāna‘i Island	introduced invasive cultivated	Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 289) Sparingly naturalized.
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive	Meidell, J. Scott/Oppenheimer, H. L./Bartlett, R. T. (1997) (p. 17) West Maui. Voucher cited: Meidell & Oppenheimer 124 (BISH)
State of Hawaii Hawaiian Islands	Maui Island	introduced invasive cultivated	Starr, Forest/Starr, Kim (2013) (p. 34) East Maui. Voucher cited: Starr, Starr & Takeda 120424-01 (BISH)
State of Hawaii Hawaiian Islands	O‘ahu Island	introduced	Wester, Lyndon (1992) (p. 128)
Palau Palau (Belau ) (main island group)	Koror (Oreor) Island	introduced	Fosberg, F. R./Sachet, Marie-Hélène/Oliver, Royce (1979) (p. 285)

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)
Australia Australia (continental)	Australia (continental)	introduced invasive	National Herbarium of New South Wales (2013) Victoria
Australia Australia (continental)	Queensland	introduced invasive	Csurhes, S./Edwards, R. (1998) (p. 152)
China China	China (People's Republic of)	introduced invasive cultivated	Zhengyi, Wu/Raven, Peter H./Deyuan, Hong (2013) Sandy soils, ditches and roadsides, other disturbed sites. Widely cultivated and naturalized.
China China	Hong Kong	introduced cultivated	Wu, Te-lin (2001) (p. 279) Ornamental.
Japan Japan	Japan	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
New Zealand New Zealand	New Zealand (country)	introduced invasive cultivated	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 213) "Waste places and sandy areas in and around cemeteries, roadsides".
United States (west coast) United States (west coast states)	USA (California)	introduced invasive	U.S. Dept. Agr., Agr. Res. Serv. (2013) Naturalized

Indian Ocean
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Seychelles Seychelles Islands	Seychelles Islands	introduced	Invasive Species Specialist Group (2017)

Also reported from
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Canada Canada	Canada	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Ontario
United States (continental except west coast) United States (other states)	United States (other states)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)
United States (continental except west coast) United States (other states)	USA (Florida)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013)

Control:  If you know of control methods for Coreopsis lanceolata, please let us know.