Angola | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Cameroon | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Central African Republic | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Ethiopia | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Kenya | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Madagascar | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Malawi | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Mali | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Mozambique | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
South Africa | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
South Africa | | | Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas | 1987 | List of species of southern African plants | Mem. Bot. Surv. South Africa | 2(1–2): 1–152(pt. 1), 1–270(pt. 2) |
Sudan | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Swaziland | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Tanzania | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Yemen | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Zambia | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |
Zimbabwe | | | Bridson, D.M. & B. Verdcourt | 1988 | Rubiaceae (part 2) | Fl. Trop. E. Africa | 415–747 |