what is opposite superimposed
The correct term is opposite superposed.
Opposite superposed is a type of phyllotaxy in which successive pairs of leaves are present just above each other, in such a way that all leaves appears to be present in one plane, overlapping one another. Example of such type of pattern of leaves is Psidium guajava (guava).
Opposite superposed is a type of phyllotaxy in which successive pairs of leaves are present just above each other, in such a way that all leaves appears to be present in one plane, overlapping one another. Example of such type of pattern of leaves is Psidium guajava (guava).