Anatomia comparada dos órgãos do sistema vegetativo de três espécies de Encyclia (Orchidaceae: Epidendroideae)

Encyclia comprises 150 species distributed in forest or savanic vegetations of the Americas. The anatomy their vegetative organs is diversified and useful on taxonomic grounds. We aimed to describe morphoanatomy system chapadensis L. C. Menezes, E. linearifolioides (Kraenzl.) Hoehne, osmantha (Barb. Rodr.) Schltr., emphasizing these characters that are both, helpful set them apartand reflect ecological conditions habitats. Some observed adaptations water restriction (hypostomatic leaves with hypodermis, roots thick velamen, differentiated endo epivelamen, pseudobulbs water- storage cells cuticle) mechanical reinforcement for support tissues (vascular bundles fibers, presence extravascular fibers thickening “fi” radicular cortex), indicating some anatomical features abiotic environment. studied taxa can be through leaf, stem root characters.