The anther development of Impatiens balsamina displays some special characters:(1)Anther wall consists of 6 layers of cells:one epidermis,two endotheciums,two middle layers and one tapedum.Tapetal cells are not clear during sporogenous stage and difficult to distinguish with sporogenous cells.The tapetal cells degenerate during the stage of microspore mother cell (MMC).(2)Some starch polysaccharides appear in the microspore mother cells which had formed a callose wall.After meiosis of MMCs,starches in early microspores disappear,and lipids were accumulated in early microspores.With microspore developing,late microspores formed several large vacuoles and lipids disappeared.After microspore division,comparing with the big vacuoles in vegetative cell disappearing,starches again appeared in the 2-cellular pollen.Nearly anthesis,mature pollen grains of I.balsamina accumulated many lipids and starches as storey materials.(3)During anther development of I.balsamina,some cells of anther wall degenerated and their cytoplasm transformed lipids for pollen absorbing,the tapetal cells degenerated and offered lipids for MMCs and microspores,and middle layer cells for bicellular pollen grains.