@article {605, title = {Pollen morphology within the Monodora clade, a diverse group of five African Annonaceae genera}, journal = {Grana}, volume = {47}, number = {3}, year = {2008}, pages = {185-210}, author = {Couvreur, T.L.P. and Botermans, M. and van Heuven, B.J. and Van der Ham, R. W. J. M.} } @article {45, title = {A revision of the African genus Hexalobus (Annonaceae)}, journal = {Systematic Botany}, volume = {36}, year = {2011}, month = {02/2011}, pages = {33-48}, type = {Taxonomic revision}, chapter = {33}, doi = {10.1600/036364411X553108}, url = {http://www.ingentaconnect.com/content/aspt/sb/2011/00000036/00000001/art00005}, author = {Botermans, M. and Sosef, M.S.M. and Chatrou, L.W. and Couvreur, T.L.P.} } @article {51, title = {Pollen morphology within the Monodora clade, a diverse group of five African Annonaceae genera}, journal = {Grana}, volume = {47}, number = {3}, year = {2008}, pages = {185-210}, author = {Couvreur, T.L.P. and Botermans, M. and van Heuven, B.J. and Van der Ham, R. W. J. M.} }