What plant is this?
Looks like Dieffenbachia. The common name, "Dumb Canes" refers to the poisoning effect of raphides, which can cause temporary inability to speak; for this reason it is also known as the mother-in-law plant. If the sap is ingested, it causes burning of the mouth and throat, and possible temporary paralysis of the vocal cords. It can also be irritating to the skin and eyes. Keep pets away from it. Here is more information: http://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?kempercode=b589