Hoffmannsegg did not personally collect in Brazil. According to TL2: "Franz Wilhelm Sieber should not be confused with Friedrich Wilhelm Sieber who collected for J. v. Hoffmannsegg in Brazil (Para) between 1801-1807, see e.g. I. Urban, Fl. bras. 1(1): 111-112. 1906, collections e.g. in B-Willd., BR and HAL.