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Ulmus campestris var. pumila Maxim.
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Flora of China Editorial Committee. 2003. Flora of China (Ulmaceae through Basellaceae). 5: 1–506. 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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Flora of North America Editorial Committee, e. 1997. Magnoliidae and Hamamelidae. 3: i–xxiii, 1–590. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Sherman-Broyles, S. L. 1992. Ulmaceae, Genus Ulmus. 26 pp.
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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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Ulmus manshurica Nakai
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Flora of China Editorial Committee. 2003. Flora of China (Ulmaceae through Basellaceae). 5: 1–506. 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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Flora of North America Editorial Committee, e. 1997. Magnoliidae and Hamamelidae. 3: i–xxiii, 1–590. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Sherman-Broyles, S. L. 1992. Ulmaceae, Genus Ulmus. 26 pp.
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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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Ulmus pinnato-ramosa Dieck ex Koehne
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Czerepanov, S. K. 1981. Sosud. Rast. SSSR 509 pages. Nauka, Leningradskoe Otd-nie, Leningrad.
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Ulmus pumila var. microphylla Pers.
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Flora of China Editorial Committee. 2003. Flora of China (Ulmaceae through Basellaceae). 5: 1–506. 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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Ulmus pumila var. sabulosa J.H. Guo, Y.S. LI & J.H. Li
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Flora of China Editorial Committee. 1988-2013. Flora of China (Checklist & Addendum). Unpaginated. 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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Ulmus turkestanica Req.
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Flora of North America Editorial Committee, e. 1997. Magnoliidae and Hamamelidae. 3: i–xxiii, 1–590. In Flora of North America Editorial Committee (eds.) Fl. N. Amer.. Oxford University Press, New York.
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Sherman-Broyles, S. L. 1992. Ulmaceae, Genus Ulmus. 26 pp.
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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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