Common name: Tarweed, Pitchweed
Madia sativa Molina APNI*
Description: Coarse annual to 2 m high; moderately to densely shortly glandular and long non-glandular hairy, usually becoming almost glabrous towards base; with stout stem, rigidly branched above to form inflorescence; strongly perfumed.
Leaves sessile, linear to lanceolate up to 18 cm long, 4–12 mm wide, broad base; upper leaves becoming smaller, often narrow-triangular and more viscid.
Heads in paniculate or racemose inflorescences; heads 6–8 mm diam. Ray florets 5–11, yellow. Disc florets 5-many, fertile, yellow.
Achenes 4–5 mm long, falcate-oblanceolate; the disc achenes often with a ridge on lateral faces; minutely grooved longitudinally; glabrous; pappus absent.
Distribution and occurrence: Naturalized in the Orange district. Native of Chile & Argentina.
NSW subdivisions: *CT, *ST, *SWS
Other Australian states: *Vic.
Text by L. Murray
Taxon concept: Flora of NSW 3 (1992)
APNI* Provides a link to the Australian Plant Name Index (hosted by the Australian National Botanic Gardens) for comprehensive bibliographic data
***The AVH map option provides a detailed interactive Australia wide distribution map drawn from collections held by all major Australian herbaria participating in the Australian Virtual Herbarium project.