Carduus

Taxonomic status:Accepted

Occurrence status:Present

Establishment means:Introduced

Annual, biennial or perennial herbs; stems erect with spiny wings. Leaves basal and cauline, alternate, usually decurrent, toothed to deeply pinnatisect, teeth and lobes spine-tipped. Capitula hemispherical to cylindric, terminal or axillary, in dense clusters or solitary, sessile or pedunculate; involucral bracts in many series, unequal, imbricate, rigid, spinose; receptacle flat or convex, densely hairy. Florets bisexual, tubular, more or less equal, purple to white; corolla deeply 5-lobed, sometimes c. 2-lipped; anthers sagittate at base, with acute appendages at apex; style shortly bilobed, with linear flattened branches, apices obtuse and minutely papillose. Cypselas ovoid to obovoid, somewhat compressed or angled, striate, glabrous; pappus of several series of barbellate bristles, connate at base into a ring and deciduous as a unit.

About 100 species, in Europe, Asia and Africa; 4 species naturalised in Australia.

Source: Jeanes, J.A. (1999). Asteraceae. In: Walsh, N.G.; Entwisle, T.J. (eds), Flora of Victoria Vol. 4, Cornaceae to Asteraceae. Inkata Press, Melbourne.
 
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life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Asterales
family Asteraceae
Higher taxa
genus Carduus
Subordinate taxa