ABSTRACT Trichome is one of the epidermal derivation as an additional tool that has a unicellular or multicellular traits. This stucture is commonly found in fern rhizome, and can be used to support taxonomical study. This study aimed to determine the characteristics of trichomes on epiphytic fern rhizomes from Duri City, Mandau District, Bengkalis Regency, Riau. Sampling was carried out using…