Corymbia, a genus of Myrtaceae, shows more than 100 tree species. In particular, Corymbia calophylla (Lindl.) K.D.Hill & L.A.S. Johnson is one of the taxa changed from Eucalyptus to Corymbia. C. calophylla has been used for fine furniture and for treating digestive upsets according to the Australian traditional medicine. The goal of this paper was to study the anatomical data of leaves from C. calophylla. The botanical material was collected from Embrapa Forest (Colombo-PR, Brazil). The anatomical analyses were performed by the usual light and scanning microtechniques. Anomocytic stomata were observed on the abaxial surface. The foliar blade showed dorsiventral mesophyll. Midrib having secretory cavities included on the vascular system was seen. In transection, a plane-convex petiole was found. Secretory cavities with oil content were verified in the anatomical structures of the foliar blade, midrib and petiole, as well as idioblasts with phenolic substances. Some calcium oxalate druses were observed in parenchymatous tissue of the midrib of C. calophylla.
Corymbia; Eucalyptus; Myrtaceae; pharmacobotany; secretory cavities
