An earlier paper (Snyder 1957) was concerned with the occurrence of obligate apomixis in several clones of Paspalum secans Hitchc. and Chase collected in the vicinity of Mayaguez, Puerto Rico, the type locality of the species.The clones investigated were found to be aposporic, with embryo development initiated by autonomous diploid parthenogenesis.Normal develop ment of the embryos and the formation of caryopses, however, were found to depend on fertilization of the polar nuclei and subsequent endosperm forma tion, i.e., the clones studied are pseudogamous.Meiotic behavior during megasporogenesis was not studied in detail, although large numbers of uni valent chromosomes were readily apparent at diakinesis and first metaphase. The primary megasporocytes commonly degenerate without dividing, but when meiosis does occur it was found to consist of two divisions resulting in the formation of a triad or tetrad of non-functional megaspores.A preliminary consideration of microsporogenesis in a number of clones revealed almost complete asyndesis at diakinesis and first metaphase, and the predominant production of dyads of microspores.The present study has been concerned with the details of meiotic behavior during microsporogenesis in several clones of the species. The nature and extent of the irregularities in meiosis are of interest in view of the pseudogamous characteristic of the materials, and also in relation to certain theories concerning mechanisms involved in the meiotic process.