Accepted By:
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Christenhusz, M. J. M., J.L. Reveal, A. K. Farjon, M. F. Gardner, R. R. Mill & M.W. Chase. 2011. A new classification and linear sequence of extant gymnosperms. Phytotaxa 19: 55–70.
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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.
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