The phrase "poisonous tree" means that if evidence is obtained illegally, all derived evidence from that initial illegal action is also considered tainted and cannot be used in a legal proceeding. Full definition
The guide tells us about medicinal and poisonous trees in the forest. (off-the-beaten-track.net)
Irreconcilability of war memories is the subject of two works: Baghdad ~ born Paul Qaysi's Misprints are purposely blurred images of U.S. military activity in Iraq, which provoke questions about how news organizations represent war; the Vietnamese transnational artist Oinh Q. Le's untit led photo - weavings from The Hill of Poisonous Trees situate the haunting memories of the Cambodian Genocide in relation to the Khmer Empire's artistic accomplishments. (imaginepeace.com)
So if you're searched or arrested following an officer's ID request, you may have a defense that there was not reasonable suspicion; hence, everything to follow is fruit of the so - called poisonous tree. (law.stackexchange.com)