Among flowers of Calotropis, tulip, Sesbania, Asparagus, Colchicum, sweet pea, Petunia, Indigofera, mustard, soybean, tobacco and groundnut, how many plants have corolla with valvate aestivation?
Calotropis, Tulip, Asparagus, Colchicum, Petunia, tobacco and mustard have corolla with valvate aestivation.