Notobasis syriaca (L.) Cass.

Syrian Thistle

Dict. Sci. Nat. 35: 171 (1825) APNI

Taxonomic status:Accepted

Occurrence status:Extinct

Establishment means:Introduced

Annual, to 1.5 m high. Leaves dark green with white veins and glabrescent above, paler and hairier below; basal leaves elliptic, to 30 cm long and 15 cm wide, lobes spine-tipped, petiolate; cauline leaves lanceolate to oblong-lanceolate, to 15 cm long and 6 cm wide, pinnatifid, base broadly auriculate-amplexicaul, sessile, uppermost pinnatisect or nearly reduced to spines surrounding and exceeding capitula. Capitula shortly pedunculate, 1.5–2.5 cm diam.; involucral bracts ovate, to 2.5 cm long, c. glabrous; outer bracts with a short apical spine; inner involucral bracts acuminate. Florets purple, rarely white. Cypselas 5–6 mm long, brown; pappus outer bristles 13–16 mm long, inner hairs 1–2 mm long. Flowers spring and summer.

Native from the Mediterranean region to central Asia. In Victoria, known only by several old (1920 and 1921) collections from the Mansfield district.

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.
Updated by: Val Stajsic, 2019-01-08
Hero image
Distribution map
life Life
kingdom Plantae
phylum Tracheophyta
superorder Asteranae
order Asterales
family Asteraceae
genus Notobasis
Higher taxa


Source: AVH (2014). Australia's Virtual Herbarium, Council of Heads of Australasian Herbaria, <>. Find Notobasis syriaca in AVH ; Victorian Biodiversity Atlas, © The State of Victoria, Department of Environment and Primary Industries (published Dec. 2014) Find Notobasis syriaca in Victorian Biodiversity Atlas
  Bioregion Occurrence status Establishment means
Central Victorian Uplands extinct introduced