The temperature of 25 oC was recommended for conducting the germination test of physic nut seeds in sand and on paper roll by Neves et al.(2009) and Vanzolini et al. (2010). However, Fogaça et al. (2007) observed that the maximum values of germination were not found at this temperature, which was also observed by Martins et al. (2008), and ranging the temperature between 20 and 30 oC best expressed seed germination, both in sand and on paper. In contrast, Dias et al. (2007), found higher values when the germination test was conducted at 30 and 35 oC. These authors also reported that physic nut seeds did not germinate at temperatures below 20 oC or above 45 oC. These results reinforce that, to date, there is no consensus as to the most suitable temperature for the germination of these seeds.