This study is on the different pollen types exhibited by the Sudanese Cassias having intra-specific pollen polymorphismCassia italica(Mill.) Lam., C.sennaL., C.sieberianaDC. andC. nigricansVahl). Quantitative and qualitative characters of modern samples ofC. italicapollen grains and stamens are presented in an attempt to evaluate the possible source(s) of the pollen polymorphism. LM and SEM were used. Three types of stamens and at least three pollen types were recognized in C.italica. The three types of stamens differ in size, general outline, apex, base, surface ornamentation, anther dehiscence and fertility. The pollen grains contained in these three types of stamens show continuous variation with respect to their exine sculpturing. The extremes of such variation are classed as pollen types I and II, whereas the intermediates, which are hardly identifiable with LM, are all designated pollen type III. These three pollen-types occur with varying percentages in the fertile stamens (i.e. long and medium stamens).