WOOD ANATOMY OF Raulinoa echinata R.S.Cowan (RUTACEAE) AN ENDEMIC SPECIES
DOI:
https://doi.org/10.24278/2178-5031.2012242389Keywords:
endemism, riparian, multiple clustered vessels, multiple tangential vesselsAbstract
Plant anatomy is useful for the characterization of species and their associated environment. Many species, because of habitat features, can show anatomical alterations of wood that permit their survival in the environment, quantity of vessels and rays, for example. Other anatomical alterations caused by structural-physiological conditions present in different regions of the stem are also common. In this study, the anatomy of Raulinoa echinata wood, an endemic riparian forest species of Itajaí Valley, was analyzed in order to identify alterations in wood because of specific habitat features, as well as adaptations in different regions of the stem. Wood samples were collected in two regions: near the ground and at breast height (1.30 m). R. echinata showed likely responses to the riparian forest in length and frequency of fibers, in width of rays and in length and frequency of vessel elements. The two wood regions showed only quantitative differences. The species also presented multiple tangential and clustered vessels. These characteristics had not yet been described for Rutaceae. The species did not present traumatic canals, which is common characteristic of the Rutaceae.
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