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The Scientific World Journal
Volume 2013 (2013), Article ID 307593, 7 pages
http://dx.doi.org/10.1155/2013/307593
Research Article

Leaf Epidermis of the Rheophyte Dyckia brevifolia Baker (Bromeliaceae)

1Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Departamento de Botânica, 88040-900 Florianópolis, SC, Brazil
2Universidade Federal da Fronteira Sul, 88750-000 Realeza, PR, Brazil
3Herbário Barbosa Rodrigues, 88301-302 Itajaí, SC, Brazil

Received 17 April 2013; Accepted 5 June 2013

Academic Editors: P. Andrade and E. Porceddu

Copyright © 2013 Ghislaine Maria Lobo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Some species of Dyckia Schult. f., including Dyckia brevifolia Baker, are rheophytes that live in the fast-moving water currents of streams and rivers which are subject to frequent flooding, but also period of low water. This study aimed to analyze the leaf epidermis of D. brevifolia in the context of epidermal adaptation to this aquatic plant’s rheophytic habitat. The epidermis is uniseriate, and the cuticle is thickened. The inner periclinal and anticlinal walls of the epidermal cells are thickened and lignified. Stomata are tetracytic, located in the depressions in relation to the surrounding epidermal cells, and covered by peltate trichomes. While the epidermal characteristics of D. brevifolia are similar to those of Bromeliaceae species, this species has made particular adaptations of leaf epidermis in response to its rheophytic environment.