(a) : In tetradynamous condition there are six stamens, 4 are long and 2 are short i.e.,4+2 arrangement of stamens. It is characteristic feature of Cruciferae members. In Liliaceae 6 stamens are arranged in whorls of 3 each (3+3). In Solanaceae there are 5 stamens they are epipetallous and polyandrous. In Malvaceae there are numerous stamens that are monadelphous.