Zhigila Daniel Andrawus, Sawa Fatima B. Jafun, Abdul D. Sulaiman, Leaf Epidermal Micromorphology as Diagnostic Features in Accessions of Sesamum indicum L., Botany Research Journal, Volume 12,Issue 4, 2019, Pages 42-47, ISSN 1995-4751, brj.2019.42.47, (https://makhillpublications.co/view-article.php?doi=brj.2019.42.47) Abstract: Fresh leaves of twelve accessions of S. indicum were studied to examine their stomatal features, epidermal cell shapes and anticlinal cell-wall patterns which may be used for the delimitation of the accessions. The twelve accessions of S. indicum studied have amphistomatic leaves. The 3 types of stomatal complex types were observed namely, anisocytic, tetracytic and anomocytic. Accession Adaw-ting (improved) has the smallest stomatal size (26.39±0.34 μm) with highest stomatal density (79.08±1.47 mm2) while accession Adaw-wula possessed the largest stomatal size (74.31±1.99 μm) with lowest stomatal density (20.80±0.58 mm2), the exception was found in accession Adaw-ting whose stomatal size is larger (64.03±1.11 μm) but with higher stomatal density (71.54±1.47 mm2). Wavy, curve or undulate anticlinal wall patterns with irregular and or isodiametric epidermal cell shapes were observed. The high variation in stomatal complex types suggests that these accessions probably have various capacities to conserve water. The leaf micro morphological features were found to be good diagnostic and additional tool in identification as well as nomenclature of the accessions of S. indicum. Keywords: Sesamum indicum;stomata;epidermal cells;taxonomy;anticlinal cell-wall patterns