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Bridson, D.M. & Verdcourt, B. (2003). Rubiaceae, Part 3 Flora Zambesiaca 5(3) Pages 502 - 505.
Burrows, J.E., Burrows, S.M., Lötter, M.C. & Schmidt, E. (2018). Trees and Shrubs Mozambique Publishing Print Matters (Pty), Cape Town. Page 979.
Darbyshire, I., Timberlake, J., Osborne, J., Rokni, S., Matimele, H., Langa. C., Datizua, C., de Sousa, C., Alves, T., Massingue, A., Hadj-Hammou, J., Dhanda, S., Shah, T., Wursten, B. (2019). The endemic plants of Mozambique: diversity and conservation status Phytotaxa 136 Page 94.
Robbrecht, E. (1987). The African genus Tricalysia A. Rich. (Rubiaceae) 4. Revision of the species of sectio Tricalysia ans sectio Rosea. Bulletin du Jardin Botanique national de Belgique 57(1/2) Pages 179 - 202.
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