Transmission of the scent of a flower is carried out by the autonomic division of the peripheral nervous system.

Autonomic Division

A part of the nervous system that controls involuntary bodily functions, including the heart rate and digestion.

Peripheral Nervous System

The peripheral nervous system consists of the nerves and ganglia outside of the brain and spinal cord, responsible for transmitting information to and from the central nervous system.

Scent

A distinctive smell, especially one that is pleasant or that is used by animals or humans for communication or attraction.