for est ▁and ▁grass land . ▁It ▁is ▁an ▁effective ▁inv ader ▁as ▁the ▁seed ▁is ▁explos ively ▁e ject ed ▁from ▁pod s ▁over ▁distances ▁of ▁several ▁metres ▁or ▁the ▁se eds ▁may ▁be ▁spread ▁further ▁in ▁dump ed ▁garden ▁refuse ▁or ▁cont amin ated ▁soil ▁and ▁it ▁is ▁also ▁dispers ed ▁by ▁birds ▁or ▁water ▁for ▁distances ▁that ▁may ▁exceed ▁ 1   km . ▁ ▁Rh iz om es ▁can ▁also ▁be ▁transport ed ▁to ▁spread ▁the ▁plant . ▁ ▁Control ▁of ▁D . ▁l ign os us ▁in ▁native ▁Australian ▁veget ation ▁can ▁be ▁very ▁labour - int ensive ▁and ▁the ▁best ▁control ▁strategy ▁is ▁to ▁minim ise ▁disturb ance ▁by ▁removing ▁the ▁smaller , ▁scattered ▁plants ▁initially ▁and ▁then ▁target ing ▁the ▁larger ▁inf est ations ▁starting ▁at ▁their ▁outer ▁marg ins . ▁The ▁small ▁seed lings ▁may ▁be ▁sp rayed ▁with ▁a ▁suitable ▁her b ic ide ▁where ▁appropriate . ▁For ▁larger ▁plants , ▁the ▁clim bing ▁st ems ▁should ▁be ▁cut ▁down ▁to ▁the ▁roots ▁with ▁the ▁rem nant ▁st umps ▁then ▁being ▁exc av ated ▁or ▁immediately ▁treated ▁with ▁her b ic ide . ▁ ▁Tax onomy ▁and ▁nom en cl ature ▁The ▁specific ▁name ▁l ign os us ▁means ▁wo ody ▁in ▁Latin , ▁referring ▁to ▁the ▁wo ody ▁st ems ▁base ▁at ▁the ▁base ▁of ▁the ▁plant . ▁D ip og on ▁is ▁derived ▁from ▁ ▁the ▁Greek ▁di , ▁meaning ▁two , ▁and ▁pog on ▁meaning ▁be ard , ▁referring ▁to ▁the