Scilla mischtschenkoana

Scilla mischtschenkoana, the Mishchenko or Misczenko squill, early squill or white squill, is a perennial plant that is native to the South Caucasus and northern Iran.
Each plant grows from a small bulb, with 2-3 strap shaped leaves and pale blue flowers with darker veins, blooming in early spring or late winter. Plants reach high and approximately wide. 
"S. mischtschenkoana" and the cultivar 'Tubergeniana' have gained the Royal Horticultural Society's Award of Garden Merit.