Both glandular and eglandular hairs are present on both upper and lower epidermal surfaces with the predominate being glandular. The glandular hair is unicellular and multicellular. The stoma type is diacytic. The petiole is covered by ovoidal and hexagonal epidermal cells. There are a lot of glandular and eglandular hairs on the epidermal cells with the prevalent type being glandular.
Parenchymatic cortex is present under the epidermis.
The cortex is 20-22 layered and there are two large vascular bundles on the median region of the petiole. A small bundle is also present near these bundles. The vascular bundles are of the collateral type. The 9th chromosome is submedian centromeric and all of the others chromosomes are median centomeric. The chromosome lengths are 0.2-16 with the longest arm being 1 and the shortest being 0.1 .Chromosomes of this specie are very small.