General:
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Brummitt, R. K. 2005. Report of the Committee for Spermatophyta: 57. Taxon 54(4): 1093–1103.
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Brummitt, R. K. 2004. Report of the Committee for Spermatophyta: 54. Taxon 53(3): 813–825.
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Smith, P. P., J. R. Timberlake & A. E. van Wyk. 1998. (1372) Proposal to conserve the name Colophospermum against Hardwickia (Leguminosae, Caesalpinioideae). Taxon 47(3): 751–752.
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