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× Hesperotropsis leylandii (A.B. Jacks. & Dallim.) Garland & Gerry Moore
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Garland, M. A. & G. Moore. 2012. ×Hesperotropsis, a new nothogenus for intergeneric crosses between Hesperocyparis and Callitropsis (Cupressaceae), and a review of the complicated nomenclatural history of the Leyland cypress. Taxon 61(3): 667–670.
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Xanthocyparis nootkatensis (D. Don) Farjon & D. Harder
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Ulloa Ulloa, C., P. Acevedo-Rodríguez, S. G. Beck, M. J. Belgrano, R. Bernal, P. E. Berry, L. Brako, M. Celis, G. Davidse, S. R. Gradstein, O. Hokche, B. León, S. León-Yánez, R. E. Magill, D. A. Neill, M. H. Nee, P. H. Raven, H. Stimmel, M. T. Strong, J. L. Villaseñor Ríos, J. L. Zarucchi, F. O. Zuloaga & P. M. Jørgensen. 2018 (onwards). An integrated Assessment of Vascular Plants Species of the Americas (Online Updates).
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