Colchicum laetum is a species of Colchicum found in south east Russia through to the Caucasus.Steven, Christian von. 1829. Nouveau Mémoires de la Société Impériale des Naturalistes de Moscou 7: 262, t. 18, Colchicum laetum
A plant known in cultivation as C. laetum 'Pink Star' is thought to be a selection of Colchicum × byzantinum. It has flowers which are pale purple-pink with rounded ends; the petals of each bloom are often held parallel to the soil surface.Nyman, Carl Frederik. 1882. Conspectus florae europaeae : seu Enumeratio methodica plantarum phanerogamarum Europae indigenarum, indicatio distributionis geographicae singularum etc. 743, Colchicum × byzantinum var. laetum
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