Phacelia tanacetifolia Benth. ex Lindl.

Tansy Phacelia

Edwards's Bot. Reg. 20: t.1696 (1834) APNI

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Sparingly established

Annual to 1.2 m high, hispidulous or scabrous; stems branching or simple. Basal leaves 6–20 cm long, 3–15 cm wide; lamina oblong-elliptic to ovate in outline, pinnate, petiolate; pinnae oblong or lanceolate, pinnatifid or incised; cauline leaves petiolate or sessile. Inflorescence densely short pubescent and hispid; flowers shortly pedicellate; calyx-lobes linear to linear-lanceolate, 4–6 mm long, equal, scarcely enlarged in fruit, densely pubescent and hispid, acute, margins entire; corolla broadly campanulate, 7–10 mm long, bluish purple, eventually deciduous; corolla-scales present, adnate to corolla-tube without free tips or lobes; stamens exserted, 9–14 mm long, filaments glabrous; style deeply cleft. Capsule broadly ovoid, 3–4 mm long, hispidulous at apex; seeds usually 2, oblong, convex on outer surface, flattened on inner, 2–3 mm long, deeply and coarsely pitted in transverse rows. Flowers late winter–summer.

*EGL, *GipP, *HSF, *MuF, *Strz, *VVP. Also naturalised WA, SA, NSW, Tas. Native to south-west U.S.A and northern Mexico. Occasionally naturalised in paddocks and pastures throughout the state.

Created by: Daniel Ohlsen, 2016-09-09
Updated by: Val Stajsic, 2019-04-02
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
family Boraginaceae
genus Phacelia
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Phacelia tanacetifolia in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Phacelia tanacetifolia in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Victorian Volcanic Plain present introduced
Murray Fans present introduced
Gippsland Plain present introduced
East Gippsland Lowlands present introduced
Highlands-Southern Fall present introduced
Strzelecki Ranges present introduced

State distribution

Distribution map
Western Australia
South Australia
New South Wales
Australian Capital Territory