Sold in 7cm pots, which need potting on. 
A cane begonia, which is a cross between filifera and luxurians. Its palmate leaves can reach 30cm in diameter with an eventual height of approximately 1.5m.
Care requirements: Grow in partial / dappled shade and in a moist, free draining soil. Feed throughout the growing season.
Tender - will need to be overwintered inside or in a cool frost-free location