Superposed Multiple Megagametophytes-Trisporic Development in Cyamopsis psoralioides DC.-A Record for the Angiosperms:Further Evidence of a Criticism of Maheshwari (1950), Johri (1963) and Rembert (1967a-Ph.D. Thesis, 67b, 69, 71)

Cyamopsis psoralioides DC., is a member of the Papilionaceae showed at one instance a linear tetrad of megaspores, where the chalazal three megaspores found functional, while the micropylar one lost its potentiality, leaving behind its remnant. Thus resulting into the superposed multiple megagametophytes. The upper megagametophyte is developed up to the four-nucleate stage. The middle megagametophyte developed six nuclei, arranged in two groups, four at the micropylar end and two at the chalazal end. The chalazal megagametophyte developed three antipodal cells. Thus resulted in the trisporic in origin.