Allium bidentatum

Allium bidentatum is an Asian species of plant in the amaryllis family. It is native to Mongolia, Russia, Kazakhstan, and northern China. It grows in well-lit places, sometimes in saline soil. Allium bidentatum produces very narrow cylindrical bulbs rarely more than 4 mm across. Wikipedia

Also known as the sand leek as it is often found in sandy soils. 

Photos on iplant.cn