Pacific Island Ecosystems at Risk (PIER)

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Tanacetum parthenium
(L.) Schultz-Bip., Asteraceae
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Present on Pacific Islands?  yes

Primarily a threat at high elevations?  no

Other Latin names:  Chrysanthemum parthenium (L.) Bernh.; Chrysanthemum praealtum Vent.; Leucanthemum parthenium (L.) Gren. & Godr.; Matricaria parthenium L.

Common name(s): [more details]

English: feverfew

French: pyrèthre doré

Spanish: altamisa, piretro de jardín, Santa Maria

Habit:  herb

Description:  "Perennial or annual, pungent aromatic herbs, with many, ± puberulous, striate-angled, erect, 20-60 (-80) cm tall, densely leafy stems from ± woody rootstock with fibrous roots. Leaves radical or cauline, punctate glandular on both sides, usually yellowish-green, on slender, canaliculate, 2.5-8 cm long petioles, laminas ovate-oblong, 2-7 (-8) cm long, 1.5-5 cm broad, 1-2-pinnatisect to pinnatipartite into obtuse or subacute ultimate segments, the upper leaves reduced gradually in size, on shot petioles or sessile, glabrous or sparsely to moderately pubescent. Capitula radiate, heterogamous, few to several, up to 20 (-30) on 2-3.5 cm long peduncles, in terminal dense corymbs borne on 2-13 (-15) cm long floral axis. Involucre hemispherical, 2-3-seriate, phyllaries imbricate, outer lanceolate, c. 1.5 mm long, inner oblong-oblanceolate, 3-4 (-5) mm long, sparsely pubescent or glabrescent, finely scarious and shortly lacerate at the apices. Receptacle convex or occasionally flat. Ray-florets 5-12, female, with oblong, 5-6 x 2-3 mm, obtusely 3-lobed, white ligules. Disc-florets yellow, with tubular-infundibuliform, 5-toothed, 2.5-3 mm long corolla tube. Cypselas oblong, 1-1.5 mm long, grayish-brown, with 6-8 white ribs and sessile glands, flattish. Pappus coroniform, irregularly lobed, or rarely evenly lobed, 0.1-0.5 mm long"  (Flora of Pakistan online).

Habitat/ecology:  In North America, "disturbed sites, urban areas, roadsides, fields, abandoned plantings; 10-1900 m"  (Flora of North America online).  In Pakistan (native), "waste places, banks of streams, sometimes in forest shade or on rock edges, from sea level to 2500 m"  (Flora of Pakistan online).  In New Zealand, "Waste places, especially roadsides, plantation margins, riverbeds and grassland"  (Webb et al., 1988; p. 175).  "In Chile this species grows in the following environmental conditions:  In shadow, steep slopes facing south or a vegetation cover which filters 40-80% of light"  (Chileflora).

Propagation:  Seed

Native range:  Albania, Bulgaria, former Yugoslavia, Greece; widely 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
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)
Ecuador (Galápagos Islands)
Santa Cruz Group
Santa Cruz Island introduced
cultivated
Charles Darwin Foundation (2008)
State of Hawaii
Hawaiian Islands
Maui Island introduced
invasive
cultivated
Wagner, Warren L./Herbst, Derral R./Sohmer, S. H. (1999) (p. 286)
As. Chrysanthemum parthenium (L.) Bernh. "Reported as escaped".
State of Hawaii
Hawaiian Islands
O‘ahu Island   Bishop Museum (U.S.A. Hawaii. Honolulu.) (1985) (voucher ID: BISH 497660)
Taxon name on voucher: Tanacetum parthenium (L.) Schultz-Bip.
New Caledonia
New Caledonia Archipelago
Île Grande Terre introduced
cultivated
MacKee, H. S. (1994) (p. 33)
As. Chrysanthemum parthenium (L.) Bernh.
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)
"Occasionally naturalized on roadsides and as a garden weed".
Canada (British Colombia)
Province of British Columbia
Canada (British Columbia) introduced
Flora of North America Editorial Committee, eds. (2013)
Chile (continental)
Chile
Chile (Republic of) introduced
Belov, Michail (2013)
Japan
Japan
Japan (country) introduced
Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 190)
New Zealand
New Zealand
New Zealand (country) introduced
invasive
Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 175)
United States (west coast)
United States (west coast states)
USA (Oregon) introduced
Flora of North America Editorial Committee, eds. (2013)
United States (west coast)
United States (west coast states)
USA (California) introduced
U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (west coast)
United States (west coast states)
USA (Washington) introduced
Flora of North America Editorial Committee, eds. (2013)
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
Flora of North America Editorial Committee, eds. (2013)
Ontario
United States (continental except west coast)
United States (other states)
United States (other states) introduced
Flora of North America Editorial Committee, eds. (2013)


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This page was created on 14 FEB 2011 and was last updated on 8 MAR 2011.