R. R. B. Negrelle, S. E. Bordignon, e O. Yano, “<b><i>Sphagnum</i> (velvet) species used by rural communities at the Guaratuba EPA, Paraná State, Brazil</b&gt; - doi: 10.4025/actascibiolsci.v34i2.7055”, Acta Sci. Biol. Sci., vol. 34, nº 2, p. 163-171, out. 2011.