FIGURE 5 in Floral ontogeny of Magnolia (Magnoliaceae) species provides insights into floral evolution but does not possess taxonomic value at the genus level

FIGURE 5. Evolution of Magnoliaceae. A. Phylogenetic tree modified from Wang et al. (2020). B. Summary of initiation and arrangement of floral organ primordia in Magnoliaceae. C. Three types of patterning of floral organs initiation in angiosperms. (1): typical spiral flower. (2): floral pattern of Magnoliaceae. (3): typical whorled flower. Colours (1: dark red, red, pink) indicate parastichy in the spiral pattern and orthostichy in the whorled pattern (3: dodger blue, gold); colours (2: dark red, red, pink) floral organs occur in sequence (tepals ultimately formed in a whorl, whereas stamens and carpels are spiral).