Cyathium is a special type of inflorescence. It is highly reduced and looks like a small flower. In this case an involucre of bracts fuses to form a deep cup-like structure. Nectaries are present at the rim of the cup. Many unisexual flowers are present in this cup. In the centre there is a single female flower. It is highly reduced and represented by a tricarpellary, syncarpous, gynoecium. This female flower is surrounded by 4-5 groups of male flowers. Male flower is also highly reduced and is represented by a single stamen. This inflorescence is found in some members of Euphorbiaceae like Euphorbia sp. and Poinsettia sp.