A.  Antonelli and Sanmartín, I., ?Why are there so many plant species in the Neotropics??, Taxon, vol. 60, pp. 403-414, 2011.

F.  Luebert, Brokamp, G., Wen, J., Weigend, M., and Hilger, H. H., ?Phylogenetic relationships and morphological diversity in Neotropical Heliotropium (Heliotropiaceae)?, Taxon, vol. 60, no. 3, pp. 663-680, 2011.

T. E.  Särkinen, Marcelo-Peña, J. Luis, A. Yomona, D., Simon, M. F., R. Pennington, T., and Hughes, C. E., ?Underestimated endemic species diversity in the dry inter-Andean valley of the Río Marañón, northern Peru: An example from Mimosa (Leguminosae, Mimosoideae)?, Taxon, vol. 60, pp. 139-150, 2011.

F.  Luebert, Weigend, M., and Hilger, H. H., ?Epitypification of Heliotropium arborescens L. (Heliotropiaceae)?, Taxon, vol. 59, pp. 1263-1266, 2010.