Maranta Lemon Lime also known as the Prayer Plant.
 
The beauty of this plant is in its leaves; bright green leaves have a centre of  dark green and bright veins. 
 
The plant tends to fold its leaves at night. 
 
 
6cm Pot diameter
 
They like bright indirect sunlight. Keep well watered but no so they are left sitting in water. They like higher humidity so mist every now and then or site on a tray pebbles in water.