The following are the species included in the genus "Colchicum". Flowers including the fritillary and some species of "Colchicum" are characteristically tessellate. Colchicum corsicum is a species of flowering plant, closely related to "Colchicum autumnale". Colchicine is an alkaloid derived from the autumn crocus ("Colchicum autumnale"). As all the species of the genus Colchicum, the species is a poisonous plant. "Colchicum cupanii" is quite variable. "Colchicum" and "Crocus" look alike and can be confused by the casual observer. "Colchicum speciosum" var. "bornmuelleri" (syn. By contrast, all parts of "Colchicum speciosum" are toxic if ingested. They should not be confused with a different genus of autumn-flowering plants, "Colchicum". "Colchicum corsicum" is a perennial growing from an underground corm. "Colchicum variegatum" is a perennial herb forming an underground corm. "Colchicum bulbocodium" is cultivated as ornamental plants in many places. Colchicum brachyphyllum grows abundantly by the melting snow of the mountains of Lebanon. In addition, crocus have one style, while "Colchicum" have three.