Colchicum zahnii is a species of flowering plant in the family Colchicaceae. It is native to southern Greece. It blooms in mid-autumn from rhizomatous corms. The flowers can be variable coloured, being a pale purple-pink to white and are often held wide open. The leaves are produced at flowering time and usually number 2 to 3. This species is similar to Colchicum boissieri in that the corms grow into large patches, rather than tight clumps like Colchicum speciosum or Colchicum autumnale.

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