Any measurable or observable characteristic related to the shape, structure, color, or pattern of the pineal gland, a midline, cone-like structure located in the dorso-caudal roof of the third ventricle, attached by peduncles to the habenular and posterior commissures, which produces melatonin.
Synonyms:
exact_synonym:
corpus pineale morphology trait; epiphysis cerebri morphology trait; glandula pinealis morphology trait; pineal body morphology trait