Dumb cane (Dieffenbachia amoena) is a very popular house plant due to its easy-growing nature. Have a close look at the patterns on its leaves.
Leaves are yellow near their midvein and turns to dark green toward the edge. This transition is random, even within the same leaf, creating patches and spots of yellow and green along the leaf blade.
Sap of this plant is poisonous and can make people incapable of talking due to swelling of tongue and throat region. Hence the common name ‘dumb cane’. But the variegated leaves make it a good ornamental plant.