Draceana massangeana, Cane Plant
Draceana is an amazing group of plants. There are so many interesting colours, leaf shapes, sizes that the sky is the limit (well, almost) for planters and interesting house plants. As a group they do best with bright, not baking sun, and do tolerate lower light levels though you may see lower leaves fall off because of low light. Evenly moist soil will keep the plants growing through the summer. Overwinter indoors.
This specimen plant has the stripe on the outside of the leaf.