A comparative study of microsporogenesis, megasporogenesis and female gametophyte development inUrochloa panicoides var.panicoides, var.pubescens, var.marathensis and var.velutina has been made. In all these varieties gametic chromosome number is n=24. Meiosis in pollen mother cells is normal and characterised by the regular incidence of 24 bivalents and their regular disjunction. This has resulted in high pollen fertility. Occassionally occurring two univalents in var.panicoides and one tetravalent in var.velutina are the only abnormalities observed. In all the varieties, the ovules are bitegmic, pseudocrassinucellate and hemianatropous. A single hypodermal archesporial cell differentiates in the nucellus and directly functions as megaspore mother cell. It undergoes meiosis forming usually a linear, rarely T-shaped tetrad. The chalazal megaspore after 3 nuclear divisions forms an 8-nucleate embryosac. The mature embryosac is spindle shaped, consisting of an egg apparatus, 2 polars and 3 antipodals. In var.panicoides and var.pubescens the antipodals divide to form 6–12 celled antipodal complex, whereas in var.marathensis and var.velutina they just become binucleate and hypertrophied. The mature embryo conform to panicoid type. The results are discussed in relation to the systematics of these sexually reproducing taxa.