skin adnexa morphology trait vibrissa follicle morphology trait Any measurable or observable characteristic related to the shape, structure, color, or pattern of the tubular invaginations of the epidermis enclosing the hair roots and from which grow the vibrissae located on the muzzle and face of many species. 2024-04-01T08:44:33Z whisker follicle morphology trait caripark VT:0011102 Trait.ontology