Parthenium hysterophorus
Family Asteraceae
Species Profile
| Species classification | Invasive [Weeds of National Significance; NSW's Noxious Weeds] |
| Common names | Bitter Weed, Carrot Grass, False Ragweed, Parthenium Weed |
| Synonyms | Parthenium lobatum Buckley |
| Longevity | Annual |
| Growth form | Herb |
| Seed dispersal morphology | Hydrochorous (buoyant seed), Wing/Achene/Pappus |
| Maximum height (m) | 2 |
| Capable of vegetative reproduction | No |
| Native range | Central America, North America, South America, West Indes |
| Exotic range (Australia) | NSW, NT, QLD |
| Exotic range (other) | Australia, Africa, Asia, North America, Oceania, Indian Ocean Islands, Pacific Ocean Islands |
| Habitat types (exotic) | Agricultural land, Disturbed areas (including trails), Grasslands, Pastures, Roadsides, Urban areas, gardens and parks, Wastelands |
| Soil type (exotic) | Alkaline, Clay, Fertile |
| Decade of introduction | 1940 |
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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