Template:Bolus, 1889

• Bolus, H. 1889. Contributions to South‐African Botany.– Part IV. (With a Revised List of published Species of Extra‐tropical South‐African Orchids). Journal of the Linnean Society, Botany 25(170): 156–210. DOI: 10.1111/j.1095-8339.1889.tb00795.x BHL  
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