Acis autumnalis, the autumn snowflake,[2] is a species of flowering plant in the family Amaryllidaceae.

A short bulbous perennial, it is found on the western shores of the Mediterranean, from Portugal, Spain and Morocco to Sicily and Tunisia.

[3][7] The genus, and with it Acis autumnalis, was reinstated in 2004, after it was determined on morphological and molecular grounds that, when broadly defined, Leucojum is paraphyletic.

[3] The World Checklist of Selected Plant Families regards all the varieties as part of a single species.

In Europe, it is native to Portugal, Spain (including the Balearic Islands), Sardinia and Sicily.