#cycloidea

[whats-in-a-sentence]

Carl Linnaeus was the first to describe a naturally occurring mutant of toadflax (Linaria vulgaris) that converted the bilaterally symmetrical flower to a radially symmetrical form (Figure 20.31).

"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.

[botanytoo]

Bilateral flower symmetry developmental genetics in Proteaceae Bilateral symmetry has evolved as an adaptive trait linked to efficient pollination and successful outcrossing, occurring over 170 times in angiosperms and in many plant groups relying upon the asymmetric expression of key transcription factors from the CYC/TB1 gene family.