Chrysanthemum cinerariifolium (Trevir.) Vis., Asteraceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  yes

Risk assessment results:  Evaluate, score: 3 (Go to the risk assessment)

Other Latin names:  Pyrethrum cinerariifolium Trevir.; Tanacetum cinerariifolium (Trevir.) Sch. Bip.

Common name(s): [more details]

English: Dalmatia pyrethrum, Dalmatian insect-flower, Dalmatian pyrethrum, pyrethrum

French: pelitre

Spanish: piretro

Habit:  herb

Description:  "Caespitose, silvery-grey, sericeous perennial.  Stems 15-45 cm.  Leaves pinnatipartite, glandular-punctate; basal 10-20 cm, petiolate, lanceolate to oblong, the segments pinnatisect to palmatisect, narrowly lanceolate to oblong-lanceolate; cauline similar but shortly petiolate.  Capitula solitary; involucre 12-18 mm.  Ligulate florets white, female; ligules 8-16 mm.  Achenes 2.5-3.5 mm, 5- to 7-ribbed.  Pappus an irregularly lobed corona 0.6-1 mm (Tutin, 1964; vol. 5, p. 171).

Habitat/ecology:  "Pyrethrum is grown in northern temperate countries and tropical areas at higher altitudes. Plants are susceptible to frost. In Kenya, crops are grown from 1,800 to 2,700 m in elevation"  (HPWRA risk assessment).

Propagation:  Seed

Native range:  Balkans (GRIN).

Presence:

Pacific Rim
Country/Terr./St. & Island group	Location	Cited status & Cited as invasive & Cited as cultivated & Cited as aboriginal introduction?	Reference & Comments
Japan Japan	Japan (country)	introduced	Mito, Toshikazu/Uesugi, Tetsuro (2004) (p. 189)

Additional information:
Additional online information about Chrysanthemum cinerariifolium is available from the Hawaiian Ecosystems at Risk project (HEAR).

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

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

References:

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.

Tutin, T. G., et al., eds. 1964. Flora Europaea. Cambridge University Press. 5 vol. plus index.

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