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References
- 1 2 3 Flann, C (ed) 2009+ Global Compositae Checklist
- ↑ lectotype designated by Nesom, Guy L. 1994. Phytologia 76(2):92
- ↑ Lessing, Christian Friedrich. 1832. Synopsis Generum Compositarum Earumque Dispositionis Novae Tentamen Monographiis Multarum Capensium Interjectis 185
- ↑ Tropicos, Gymnostephium Less.
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