Dieffenbachia ("Dumb Cane").

Dieffenbachia is a genus of tropical flowering plants in the family Araceae. It is native to the New World Tropics from Mexico to the West Indies and South to Argentina. Some species are widely cultivated as ornamental plants, especially as houseplants and have become naturalised on a few tropical islands. Dieffenbachia is a perennial herbaceous plant with straight stem and simple alternate leaves containing white spots and flecks, making it attractive as indoor foliage. Species in this genus are popular as houseplants because of their tolerance of shade. Its English name "Dumb Cane" refers to the poisoning effect of raphides in it's sap which can cause temporary inability to speak if ingested.
(Wikipedia).

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