This chapter contains section titled: GENERALIZATIONS AND HISTORICAL INTERPRETATIONS CYTOLOGY OF ENDOSPERM INTRODUCTION TO ENDOSPERM TYPES MULTICELLULAR ENDOSPERM COENOCYTIC/MULTICELLULAR ENDOSPERM HELOBIAL ENDOSPERM COENOCYTIC ENDOSPERM ENDOSPERM HAUSTORIA PERISPERM MOVEMENT OF CARBOHYDRATES INTO ENDOSPERM STORAGE PRODUCTS IN ENDOSPERM ALEURONE LAYER AND MATURE ENDOSPERM FUNCTIONS OF ENDOSPERM SPECULATIONS ON ENDOSPERM VARIATION LITERATURE CITED