Onopordum acaulon
Family Asteraceae
Species Profile
| Species classification | Invasive [WoNS shortlist (pre-2012); NSW's Noxious Weeds] |
| Common names | Horse Thistle, Stemless Onopordon, Stemless Onopordum |
| Synonyms | Onopordum acaule orth. var. J.M.Black |
| Longevity | Annual, Biennial |
| Growth form | Herb |
| Seed dispersal morphology | Wing/Achene/Pappus |
| Maximum height (m) | Information unavailable |
| Capable of vegetative reproduction | Yes |
| Native range | Northern Africa, south western Europe |
| Exotic range (Australia) | NSW, SA, VIC, WA |
| Exotic range (other) | Information unavailable |
| Habitat types (exotic) | Agricultural land, Pastures, Riparian Systems, Roadsides, Wastelands |
| Soil type (exotic) | Alkaline, Sandy |
| Decade of introduction | 1840 |
National Climate Change Impact
Invasive Class 3
The area of suitable habitat and the habitat suitability of observations, for this species, are projected to decrease or remain the same under RCP 8.5 2065 compared to current climate suitability.
Maps of Habitat Suitability & Recorded Occurrences
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Current suitable habitat
2035 suitable habitat
(RCP 8.5)
2065 suitable habitat
(RCP 8.5)
Recorded occurrences
(Australia)
Recorded occurrences
(global)
Images
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Further Information
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