http://weeds.dpi.nsw.gov.au/Weeds/Details/131
General Biosecurity Duty NSW.
https://keyserver.lucidcentral.org/weeds/data/media/Html/cenchrus_longispinus.htm
Cenchrus longispinus is listed in the following regions:
Canberra & Southern Tablelands
Species page sighting lists are under redevelopment and will return very soon.