Scilla nana (also know as Chionodoxa nana or cretica)
Scilla nana (formerly called Chinodoxa nana) is a mountain plant growing from a bulb and it flowers at snow melt time. It is often seen in company with crocus sieberi (see middle photo) in the midst of berberis bushes. The small flowers can be pure blue, blue and white and sometimes very light blue. It is an endemic flower of the White Mountains.
Another very slightly different species, Scilla albascens grows in the other mountain ranges of Crete.