| Summary: | Zodia (Evodia suaveolens Scheff) is a member of Rutaceae contain terpenoids, triterpenoids, alkaloids, flavonoids, and xanthones which have anti-mosquito activity. This research aimed to observe the anatomical structure, the location, and distribution of terpenoid based on the leaves' age. Anatomical slides preparation of leaves were made using the paraffin embedding method with safranin staining. The distribution of terpenoid was analyzed by the histochemical assay. Leaf anatomical structure shows that the 3rd and 6th leaf bifacial (dorsiventral) consisted of the upper epidermis, mesophyll (palisade and sponge), collateral vascular bundle, parenchyma midrib, abaxial epidermis and oil glands in mesophyll that is underneath both epidermises. The diameter of oil glands with larger sizes was on the 6th leaf, whereas the density is not different in the 3rd and 6th leaves. The histochemical test showed that terpenoid was observed in the leaf vascular bundles, oil glands, and epidermis.
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