Cassanego, M.B.B. Goldoni, A. Heldt, F.H. Osório, D.M.M. Windisch, P.G. Droste, F.H. Germination and sporophytic development of Regnellidium diphyllum Lindm. (Marsileaceae)in the presence of copper Subjects--Topical Terms: SAMAMBAIAMETAL PESADOPOLUIÇÃOCOBRE