(c) : In China rose the flowers are actinomorphic $i.e.$, it can be divided into two equal radial halves in any radial plane passing through the centre? they are hypogynous, $i.e.$, the gynoecium occupies the highest position, while the other parts are situated below it; they have twisted aestivation $i.e.$, one margin of petal overlaps that of the next one and so on.