I am sorry, I couldn't conclude on that species, but perhaps you could do it through a Brazilian botanical book
http://www.plantasraras.org.br/
http://www.scribd.com/doc/61709453/205/TURNERACEAE
or by googling the species it the list bellow (as I did)
http://www.yorku.ca/shore/Turneraceae/Turneralist%20Jan20%202007.htm
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