Consider the diagrammatic representations of different aestivations shown and select the correctly labelled option.
A = imbricate, B = twisted, C = vexillary, D = valvate
A = valvate, B = twisted, C = descendingly imbricate, D = ascendingly imbricate
A = twisted, B = valvate, C = ascendingly imbricate, D = descendingly imbricate
A = valvate, B = twisted, C = ascendingly imbricate, D = descendingly imbricate
Find out the correctly matched pairs as to aestivation of petals: (i) Valvate-Calotropis, (ii) Twisted-Bean (iii) Imbricate - Cassia (iv) Vexillary-China Rose.