Figure A shows valvate aestivation in which the sepals or petals lie very close to each other with out overlapping.
Figure B shows twisted aestivation in which one margin of the sepal or petal overlaps the next one which then overlaps the third one and so on.
Figure C shows imbricate aestivation in which the margins of sepals or petals overlap one another but not in a particular direction.
Figure D represents quincuncial aestivation in which the two petals are inner, two are outer and one is partly outer and partly inner.
Figure E represents vexillary aestivation in which the largest petal (out of five) overlaps the two smallest anterior petals.
