The central circle represents the Supreme Mother, the Mahashakti. The four central petals are the four aspects of the Mother and the twelve petals, Her twelve attributes.

It is the symbolic design of the white Lotus of Supreme Consciousness, with the Mahashakti (the form of the Mother as universal creation) at the centre in her four aspects and twelve attributes.The central circle represents the Divine Consciousness.The four petals represent the four powers of the Mother.

The twelve petals represent the twelve powers of the Mother manifested for Her work.

(CWM 13: 63-64)

15th April 1934:

Essentially (in general principle) the twelve powers are the vibrations that are necessary for the complete manifestation. These are the twelve seen from the beginning above the Mother’s head. Thus there are really twelve rays of the sun not seven, twelve planets, etc.

(CWSA 32: 598)

–  Sri Aurobindo