Total lipids and omega-3 fatty acids in purslane (Portulaca oleracea) were determined in leaves, stems and whole plants at three ages. Significant differences (P<0.05} existed in levels of total lipids among ages and between leaves and stems, but no relationship of age to plant part (>0.05) was found. Contents of 18:3r 20:5w3, 22:5w3, 22:6r 18:2r and 18:1co9 showed that leaves were the richer source of omega-3 acids at each age. KEY WORDS: Lipids, omega-three fatty acids, purslane.