part_of part of part of cardinal organ part petiole margin margen del pec&#237olo (Spanish, exact) A cardinal organ part (PO:0025001) that is the edge of a petiole lamina (PO:0025129) and the area immediately internally adjacent to it. CO_125:0000006 葉柄縁 (Japanese, exact) 2010-03-25T10:04:37Z CO_125:0000016 plant_anatomy Petiole margins may be found in flattened (laminar) petioles, but may also occur in laminar extensions of petioles that are rounded or c-shaped in cross section. rwalls PO:0025010 petiole lamina