Literature Based Distribution
Region
Country
Mapping will be based on a standard reference mark based on political units when available.
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| 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) |
| South Africa | | | Puff, C., E. Robbrecht & V. Randrianasolo | 1984 | Observations on the SE African-Madagascan genus Alberta and its ally Nematostylis (Rubiaceae, Alberteae), with a survey of the species and a discussion of the taxonomic position | Bull. Jard. Bot. Natl. Belg. | 54: 293–366 |
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