FIGURE 2. SEM micrographs of sexual organs of Persicaria amphibia in detail: A) pistil of hermarphrodite flower, B) stigma of female flower, C) detailed cell structure of stigma surface, D−F) fertile stamen of hermaphrodite: D) matured anther with pollen grains, E) endothecium thickening, F) cell surface of outer epidermis of anther, G−I) sterile stamen of female flower: G) stamen with reduced anther, H) cell structure of ventral side, I) cell structure of dorsal side.