Souza, Luis A.Albiero, Adriana L.M.Almeida, Odair J.G. [UNESP]Lopes, William A.L.Mourão, Káthia S.M.Moscheta, Ismar S.2022-04-282022-04-282009-08-19Latin American Journal of Pharmacy, v. 28, n. 1, p. 103-107, 2009.0326-2383http://hdl.handle.net/11449/225580The genus Piper L. includes a great number of medicinal interest species. P. arboreum is frequent in forests of Maringá, Paraná State, Brazil. Its leaves and stem are analyzed morphologic and anatomically, freehand sectioned in cross-section and longitudinal section, and were stained in astra blue and safranin. Petiole and midrib base present 15-20 vascular bundles. The blade is hypostomatic, dorsiventral and shows staurocytic stomatal complex, subepidermis and oil idioblasts. The stem possesses medullary vascular bundles; a typical endodermis is not observed, as it occurs in other Piper species.103-107porAnatomyLeafMorphologyPiper arboreumPiperaceaeStemArtigo2-s2.0-68649110978