Emex australis
Family Polygonaceae
Species Profile
| Species classification | Invasive [NSW's Noxious Weeds] |
| Common names | Bullhead, Cape Spinach, Double-gee, Goathead, Prickly Jacks, Spiny Emex, Three-cornered Jack |
| Synonyms | Emex centropodium Meisn. |
| Longevity | Annual |
| Growth form | Herb |
| Seed dispersal morphology | Adhesive (burrs, sticky, awns, hairs etc), Hydrochorous (buoyant seed) |
| Maximum height (m) | 0.5 |
| Capable of vegetative reproduction | No |
| Native range | Southern Africa |
| Exotic range (Australia) | NSW, NT, QLD, SA, VIC, WA |
| Exotic range (other) | Asia, Oceania, Pacific Ocean Islands |
| Habitat types (exotic) | Agricultural land, Grasslands, Pastures, Wastelands, Woodlands |
| Soil type (exotic) | Loamy, Sandy |
| Decade of introduction | 1830 |
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
http://plantnet.rbgsyd.nsw.gov.au/cgi-bin/NSWfl.pl?page=nswfl&lvl=sp&name=Emex~australis
http://www.dpi.vic.gov.au/agriculture/pests-diseases-and-weeds/weeds/other-declared-weeds/spiny-emex
http://www.hear.org/pier/species/emex_australis.htm
http://www.environment.gov.au/cgi-bin/biodiversity/invasive/weeds/weeddetails.pl?taxon_id=20724
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