Phacelia tanacetifolia Benth., Boraginaceae

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Present on Pacific Islands?  no

Primarily a threat at high elevations?  no

Risk assessment results:  Evaluate, score: 5 (Go to the risk assessment)

Common name(s): [more details]

English: fiddleneck, lacy phacelia, lacy scorpion-weed, phacelia, tansy, tansy phacelia

French: phacélie, phacélie à feulles de tanaisie, phacelia

Spanish: facelia

Habit:  herb

Description:  "Erect or suberect, ± hairy annual, to c. 1 m high; mature stems sparingly hairy. Leaves pinnate, to c. 10 x 6 cm; leaflets pinnatifid, usually white-hirsute when young, especially below; lobes of leaflets < 1-5 mm long, ± oblong, crenate to deeply serrate. Cymes scorpioid, terminal, many-flowered, glandular and tomentose and with prominently long white hairs; branches to c. 10 cm long at fruiting. Pedicels short. Flowers fragrant. Calyx 4.5-7 mm long, linear or nearly so, densely hirsute. Corolla 6-8 mm long, lavender or pale mauve, with darker veins; limb 7-10 mm in diameter; lobes rounded, slightly < tube. Filaments with corolla scales adnate to base, long- exserted, glabrous, bluish mauve. Style 2-fid almost to base, pale bluish mauve, hairy towards base. Ovary densely white-hirsute. Capsule c. 4 mm long, elliptic-ovoid, hairy towards apex. Seeds 2.5-3 mm long, ± ellipsoid, strongly pitted, sharply keeled"  (Webb et al., 1988; p. 759).

Habitat/ecology:  In New Zealand: "vegetable gardens and waste places in gardens, sometimes cultivated as an ornamental"  (Webb et al., 1988; p. 759).  In California (U.S.) (Native), "sandy to gravelly slopes, open areas, < 2000 m"  (Jepson Manual online).

Propagation:  Seed

Native range:  Mexico (Baja Norte) and southwestern United States (GRIN).

Presence:

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) Garden escape, not common.
Australia Australia (continental)	Australia (continental)	introduced invasive	U.S. Dept. Agr., Agr. Res. Serv. (2013) South Australia Naturalized
Mexico Mexico	Mexico (United Mexican States)	native	U.S. Dept. Agr., Agr. Res. Serv. (2013) Baja Norte
New Zealand New Zealand	New Zealand (country)	introduced invasive cultivated	Webb, C. J./Sykes, W. R./Garnock-Jones, P. J. (1988) (p. 759)
United States (west coast) United States (west coast states)	USA (Oregon)	native	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013)
United States (west coast) United States (west coast states)	USA (California)	native	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)	native	U.S. Dept. Agr., Nat. Res. Cons. Serv. (2013) Arizona, Colorado, Kansas, Nevada

Control:  If you know of control methods for Phacelia tanacetifolia, please let us know.