Accepted By:
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Flora of China Editorial Committee. 1999. Flora of China (Cycadaceae through Fagaceae). 4: 1–453. In C. Y. Wu, P. H. Raven & D. Y. Hong (eds.) Fl. China. Science Press & Missouri Botanical Garden Press, Beijing & St. Louis.
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Nasir, E. & S. I. Ali (eds). 1980-2005. Fl. Pakistan Univ. of Karachi, Karachi.
General:
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Brummitt, R. K. 2011. Report of the Nomenclature Committee for Vascular Plants: 63. Taxon 60(4): 1202–1210.
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Veldkamp, J. F. 2009. (1906-1907) Proposals to conserve the names Engelhardia against Pterilema and E. spicata against P. aceriflorum (Juglandaceae). Taxon 58(3): 1012–1013.
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