Puschkinia scilloides is a bulb with an exquisite little flower; it's also known as the Striped Squill.
I have tried them in several spots in the back garden but it seems they don't flourish in the cold damp clay of London- their home is in the mountains of the Middle East. Fortunately a few have taken a liking to a corner of the bed in the front garden and appear every year roundabout now.