Colchicum laetum is no longer considered to be a true species. The only cultivated variety of C. laetum, known as 'Pink Star' is highly floriferous, but likely a selection of Colchicum byzantinum

Colchicum byzantinum

Colchicum byzantinum is a species with a long history of cultivation, and no certain place of origin, which means it could be a hybrid of other species....

and not a separate species.

The flowers are pale purple-pink with rounded ends and the petals of each bloom are often held parallel to the soil surface.