The name Galanthus comes from Greek meaning 'milk white flowers'. With more than 75 species and varieties, snowdrops - practically without exception - all bloom very early in the Spring and have, indeed, milky-white flowers. Some times they are confused for 'snowflakes', however that is the common name for the genus Leucojum.
Plant early in Fall in moist, humus rich soil. Leave them undisturbed and they will naturalize happily without having to be divided. Plant in groups of 15-25 for best effects.