@book {1365, title = {Seed plants of southern tropical Africa: familes and genera}, year = {2005}, pages = {494}, publisher = {Southern African Botanical Diversity Network (SABONET)}, organization = {Southern African Botanical Diversity Network (SABONET)}, address = {Pretoria}, isbn = {1-919976-07-8}, author = {O. A. Leistner} } @book {1364, title = {Seed plants of southern Africa: families and genera}, year = {2000}, pages = {775}, publisher = {National Botanical Institute}, organization = {National Botanical Institute}, address = {Pretoria}, isbn = {1-919795-51-0}, author = {O. A. Leistner} }