Retlaw plant
The retlaw plant was a poisonous, mobile plant native to the planet Phylos. The retlaw moved by walking on its roots. When it stopped, its roots bored back into the ground. 

In 2269, Hikaru Sulu was poisoned by the retlaw and nearly died before the antidote was given to him by Agmar. ()

External link

de:Retlaw-Pflanze
fr:Plante Retlaw
Plants