@article {56, title = {Molecular and morphological characterization of a new monotypic genus of Annonaceae, Mwasumbia, from Tanzania}, journal = {Systematic Botany}, volume = {34}, number = {2}, year = {2009}, pages = {266-276}, author = {Couvreur, T.L.P. and Van der Ham, R. W. J. M. and Mbele, Y.M. and Mbago, F. M. and Johnson, D. M.} } @article {50, title = {Monograph of the syncarpous African genera Isolona and Monodora (Annonaceae)}, journal = {Systematic Botany Monographs}, volume = {87}, year = {2009}, pages = {1-150}, author = {Couvreur, T.L.P.} }