Floral diagram: The symbol which is used to express the arrangement, number, symmetry. placentation etc. of floral leaves of different whorls based on floral axis is said to be floral diagram.
Rules of drawing:
(i) It is drawn, on the basis of mother axis. Mother axis is drawn by a small circle
(ii) Particular sign is used to express each whorl. Each whorl of the flower is drawn orderly on the circular line
(iii) Transverse section of ovary is drawn at the centre of the floral diagram where placentation is also shown.