It is a narrow white band, triangular on coronal section, the apex being directed upward.

[4] The olfactory peduncle divides posteriorly into three main branches: the medial, intermediate and lateral striae.

Trolard's term "pectineal formation " is used to refer to multiple intermediate striae extending from the lateral olfactory stria.

Destruction to the olfactory peduncle results in ipsilateral anosmia (loss of the ability to smell).

Anosmia either total or partial is a symptom of Kallmann syndrome a genetic disorder that results in disruption of the development of the olfactory peduncle.