@article {84, title = {New species of Xylopia and Uvaria (Annonaceae) from Tanzania}, journal = {Novon}, volume = {9}, year = {1999}, pages = {55-60}, author = {Johnson, D. M. and Mwasumbi, L.B. and Mbago, F. M.} } @article {86, title = {The genus Uvariopsis (Annonaceae) in tropical Africa with a recombination and one new species from Cameroon.}, journal = {Novon}, volume = {13}, number = {4}, year = {2003}, pages = {443-449}, author = {Kenfack, D. and Goseline, G. and Gereau, R.E. and Schatz, G.E.} }