Aerial stem and leaf morphoanatomy of some species of Smilax

Revista Brasileira de Farmacognosia

Aline R. Martins²  Aline B. Bombo¹  Anielca N. Soares¹  Beatriz Appezzato-da-glória¹ 

[1] ,Universidade Estadual Paulista Júlio de Mesquita Filho Departamento de Biologia e Zootecnia Faculdade de Engenharia de Ilha Solteira,Brazil

关键词: anatomy;    leaf;    sarsaparilla;    stem;    Smilacaceae;    Smilax;   

DOI  :  10.1590/S0102-695X2013005000043

来源: SciELO

【 摘 要 】

This study aimed to describe the morphoanatomy of the aerial vegetative organs of seven Smilax species, used in Brazilian folk medicine. Samples of leaves and stems were fixed with FAA 50, embedded in historesin, sectioned on a rotary microtome, stained and mounted in synthetic resin. Cuticle ornamentation was analyzed with standard scanning electron microscopy. In the frontal view, the walls of the adaxial epidermis are straight in S. brasiliensis, S. cissoides, S. goyazana and sinuous in the other species. The walls of the epidermis on the abaxial surface are straight in S. brasiliensis, S. goyazana, S. rufescens, sinuous in S. campestris, S. fluminensis, S. oblongifolia, and wavy in S. cissoides. The stomata are paracytic in S. brasiliensis, S. goyazana, S. oblongifolia, and S. rufescens, anomocytic in S. cissoides, S. campestris; anisocytic and paracytic in S. fluminensis. The midrib has three vascular bundles that are individually wrapped by lignified cells in S. brasiliensis, S. cissoides, and S. fluminensis. In the other, the three vascular bundles are surrounded by a single lignified sheath. In the stems the vascular cylinder is surrounded by a sclerenchymatous ring with the exception of Smilax fluminensis, which has a starch sheath and internal layers of thin-walled cells.

【 授权许可】

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