Floral and pollen morphology of Pogostemon cablin (Lamiaceae) from different habitats and its taxonomic significance

Floral and pollen grains of Pogostemon cablin (Lamiaceae) from three different habitats were studied by stereoscope and scanning electron microscope(SEM). Morphological differences among the three different populations were tabulated and the micrographs were also provided. The results provided scientific basis for recognition and distinction of Pogostemon cablin varieties.